It's because trannies are the perfect Globohomo Golem. They accomplish multiple things at once. First, they get people addicted to never ending forever drugs. You're stuck on drugs for the rest of your life that are extremely profitable for pharmaceutical companies. These drugs are not cheap either. The procedures aren't cheap. To tranny max, you have to have a lot of money. That's why you see so many trannies in high paying tech jobs.
Second, it lowers the population because these people will not and most often, cannot reproduce. You successfully end family lineages and end nuclear families. These people are genetic dead ends. The real goal though that I don't think people talk about, is that the real goal is to end TWO family lines; not just one. They want to end the family line of the tranny, plus anyone they date. That's why the whole "It's straight if they're trans" is a thing. They're not killing one bird with one stone. They're trying to kill two. That's why these drugs basically castrate you, even if you're an MTF dating a female, you still can't reproduce.
Third, you create a population of people that are complete servitude oriented. These people cannot exist without their HRT, and as a Democrat, I can lord these drugs over their heads and get them to do anything I want. If I want them to vote for a candidate, I make a narrative that my candidate will give HRT and the other will ban it. It's an automatic narrative vocal base of psychotic slaves. It's like having an entire support network of drug addicts working for you. I will make them ruin every company to shove their narratives down everyone's throat. They're the perfect moral weapon because stupid people buy into the narrative of Live and Let Live. They're an army of perfect slaves using weaponized morality.
There's a fourth goal though, and I don't see anyone on this site ever talking about. Mostly because it hasn't really become a factor yet. This is a more long term goal of the trannydom. One that won't happen until trannyhood becomes a widely accepted thing. However, it's easily the most sinister and probably was a socially wargamed endgame for this whole endeavor.
Fourth, the eradication of inheritance. This is a bit of a stretch, but hear me out. How many of these trannies have good relationships with their parents? It's practically none, except the most psychotic of them. They all have terrible relationships with their parents and many are likely being written out of their wills in favor of their brothers and sisters. You often see trannies having little or no contact. The act of trooning out usually destroys the relationship. Even if they don't, they're trannies. Where is that inheritance going to go? You can't take money with you when you die. They have no kids. So where is it going? Look at the answers DINKs give. Basically nowhere, maybe a nephew or niece if you're lucky. Often to charity. Now imagine what would've happened if you had a long-term acceptance of trannydom. You'd have a sizeable and more importantly, very vocal, population of people who are basically communist slaves, who would happily cheer on for the removal of the concept of inheritance because they're either not going to have any themselves, or have no need for it. You would've seen a lot of push for how unfair inheritance is and how much it promotes inequality. Thankfully, we never got that far. But if you think that wasn't wargamed out, you're wrong. That was the next narrative coming.