I find that a big problem with 40K tabletop is that it really favors alpha striking and really no tactical thought.
You are correct. Anyone who thinks winning at 40k takes actual skill is a fucking idiot, unless
"buy the correct toy" or
"know how to read the rules for a toy" are actual 'skills'- which, at that point you may as well expect a parade for doing laundry by yourself. Shine on, you shiny diamond.
Don't get me wrong, I'm not saying that any idiot can pick up the rulebook and within 10 minutes be winning a tournament. But 40k isn't a strategic challenge- it's about having the right toy against the other guy's toys, and knowing what a couple of paragraphs say about how your toys work. That's really about it, "follow instructions and use common sense". When all else fails, throwing a shitload of dice at something will win- you can wound a fucking Baneblade on 6's, even if your dude's attack is a fistful of soggy rice crispies.
There's no cunning ruse involved, no tactical brilliance, no bold risky manuevers, no clever combination of hidden assets... it's all pretty basic- not that it's a bad thing at all, not every game needs to be a mental workout. As much as I love Corvus Belli's
Infinity for being a very tactical game that does require a significant degree of ruses, tactical thinking, taking risks, and having hidden tricks up your sleeve... there's a reason I don't play it but once or twice a month at most... and I do recommend
Infinity, it's a skirmish game with a degree of tactical depth, and when you compare
Infinity to Kill-Team it's like comparing structural engineering to stacking Duplo blocks.
I wish GW would focus down and make a new version of Shadow War, or some kind of Skirmish game with a lot of tactical depth that involved more than a few simple, basic action. Necromunda is very much a step in the right direction, to a point where one of my favorite things about it is the ability to make your own dudes from scratch to use as a 'gang'- I've seen people drag up everything from Catachans, Ecclesiarchy Frateris Militia, Rogue Trader Retinues, and I've even made an Afriel Strain Death Squad.