It’s got most of the same issues as eugenics - yeah, it’d be nice if nobody had to suffer obvious and objective genetic diseases but it consistently immediately turns into “well but I think being a red head is a genetic disease”. You have to consider how a solution can be achieved to really weigh its benefit versus alternatives.
We can feed everybody by Luigi-ing a rounding error’s worth of billionaires. Or we can reduce global population by a factor of 10, which is almost certainly going to disproportionately favor rich white dudes, do nothing to that handful of sociopaths, and they’ll still burn the planet to the ground.
The issue is people have gone down this line of thinking dozens of times and it always ends the same way. Your inability to see that is how we get there.