You're not completely wrong, but what you're missing is that the whole thing is a laughable strawman. Yes, "our side" jokes about not allowing unfit people to breed, and for 99% of people, it stops at being a joke, forever.

What I, as an actual conservative russian nazi troll white supremacist, would like, is to end welfare and affirmative action and related programs, including "diversity hiring" by private companies, because welfare only incentivizes unfit people to have kids and then fuck them up by failing as parents, and AA etc. only ensures the product of these fuckups can gain power and fuck over normal people like the spiteful mutants they are, despite being unfit to have any power over anyone but themselves. Take away the perverse incentive to have kids and raise them wrong, and it works just as well as banning certain people from procreating, except nobody needs to be banned from anything. Take away the way to gain power over others through being a fuckup, and the few kids who were failed by their parents will stop endangering everyone with actual merit.