No, I understand the IP perfectly.
You see 40K from the POV of the fans who think the Imperium has to do what it does to survive. The funny thing is, that's their in-universe propaganda. The real issue is, the Imperium is like that because the writers were angry at religious and military conservatives, and so they wrote a faction that represented the worst of both. Of course, down the line, the later authors lost the plot as they just made it about Space Marine power fantasies, kind of like how some SW writers lost the plot about the Light/Dark Freedom/Control plotline and just went with what they felt like. (*cough* Dave Filoni *cough* Karen Traviss *cough*)
Trying to view Star Wars from a Buddhist perspective just ends with the Buddhist scratching his head. The Jedi version of detachment is way too extreme; their views on Light and Dark are irrational, you're supposed to balance out Yin and Yang. Having the Force be restricted to people with special blood makes no sense when everyone technically has ki in the Eastern view. The way the Jedi view detachment as an opposite to love would puzzle many Buddhists, who are fine with detachment, but have no problems with love.
Meanwhile, viewing Star Wars from a western, Christian perspective, everything makes perfect fucking sense. The Force-sensitives aren't just yoga practitioners, they're Maiar with special properties. The Light is Good and the Dark is evil because the former represents compassion and self-control, and the latter represents anger, hate, and giving in to temptation. The Jedi view on detachment is proven to be false; LOVE is what ends up saving people, not detachment, which is in line with the Christian idea that love can save a person from evil, because it is a reflection of the True Love which comes from God, who IS Love. Luke succeeds where Yoda failed, especially when it came to getting Anakin on his side, and that saves the day.
The Death Star is the Goliath to Luke Skywalker's King David. Vader is the Prodigal Son. I can keep going on and on........
Asians have varying ways of handling gays. Shinto Buddhist Japan, for instance, tolerated lesbian relationships to a certain extent, and there's more than a few stories of Buddhist man-boy love that would make even the Catholic priests' sex abuse scandal in the 2000s seem tame by comparison. So no, them treating gays like haram is a very western phenomenon. Sure, modern China might act like gays belong in a concentration camp, but that opinion is not shared by all Asian Buddhist nations. Especially when China today is somewhere between Christian and Communist; both of which are western philosophies, since the CCP eradicated China's historical past in the Great Leap Forward.
I was talking about AFTER 30K and AFTER the Emperor and Horus fought. Naturally, humanity would be able to evolve or advance in their own terms, with or without the Primarchs or the Emperor guiding them. Mankind is naturally resilient and smart. That's why Fallout's fallen society is more logical than 40K's; they're both decayed societies, but human ingenuity is still present in the Enclave and post-Nuclear War America, whereas 40K, they stamp out innovation because the writer wanted to bitch about religion fitting everyone into a mold and burning people at the stake for trying to move out of it.
In 10K years, mankind would've been able to invent newer technology, instead of just repeating old notes. Or, they'd be able to make the old tech in a more efficient way, to the point where what used to be for special forces in 30K would be standard equipment in 40K. For example, remember Han Solo's special hyperdrive which can go 0.5 past lightspeed? In SWTOR, 3700 years before the films, that was a superweapon that can only be created and used by the highest-ranking officials in the Sith Empire. In the OT era, some dickweed who has debts from the Space Mafia can afford to buy and attach such a hyperdrive to an ugly old Corellian freighter.
Just like how back then, human soldiers had special units with crossbows and muskets, and now, most human soldiers have assault rifles. So too should the Imperial Guard in 30K march into battle with lasguns, but by 40K, they'd have phased out the lasguns and mass-produced plasma weapons that they've figured out how to make stable and NOT explode while being used. An IG unit would've run screaming in fear at the sight of Black Legion Space Marines in 30K, but in 40K, they'd react to the same Space Marines with laughter while they bust out the mass-produced plasma guns and effortlessly burn said Space Marines with a hail of plasma fire.
I mean, shit, even the Star Wars movies showed this tech progression. In the Prequels, things were mostly peaceful, and most wars were local affairs. Blasters were at best, laser bullets, as we see in Phantom Menace. But after the chaos of the Clone Wars and the Rise of the Empire, the blaster shots in movies like A New Hope and Empire Strikes Back are like small grenades in plasma bolt form. A blaster shot in TPM would just hit like a ping onto a cheap-ass battle droid, as if the thing was hit by a bullet, whereas a blaster shot in ESB would blow a high-end droid like Threepio into pieces.
As for the Rakatans, their tech was lost because they required the use of the Force. So even if it was found, only the Jedi and Sith would be able to use it, and the Jedi would probably destroy it because it's of the Dark side.
Not to mention that, unlike 40K, which is on a total war mode 100% of the time, Star Wars has times of peace that last for hundreds, if not thousands of years, so people can get complacent and military secrets can get lost. Whereas a total war society like the Imperium should be continuously innovating and developing new tech, because their survival depends upon it. Just look at what happened to US when the World Wars and the Cold War hit. Look at all the technological innovations that came about because we were trying to keep up with the other guy to stay on top. Nuclear power, space travel, the FUCKING INTERNET. And the Imperium of Man is in an even more dire situation than us. They should be innovating up the butthole to keep up with all the threats they face.
Star Wars started off as a dark sci-fi story where characters were burned into skeletons, lightsabers didn't cauterize blood from wounds, and main characters will ruthlessly kill to stay alive. Then Lucas settled down, got soft, and wanted to sell Star Wars to kids, so he made it more kid-friendly.
Warhammer 40K, for the longest time, was made for adults, by adults, and only adults could afford those model kits. So their art and stories remained dark and for adults until recently, when kids started getting into things like microtransaction video games, making God knows how many millions of dollars, which explains why Games Workshop is slowly trying to kiddy-fy Warhammer 40K and Fantasy to get kids who have daddy's credit card on hand.