edit: seems like some people interpret “full of” as a mathematical majority which, while it may or might not be true instance to instance, isn’t my intent in posting
feel free to swap in “has a lot of” if that’s more familiar language to you :)
It's been around in related forms, for a while; the reactions to just any comment where someone points out or mentions eugenics usually are good ones (arguably, the argument that's caught on around here that brain damage is literally conservativism is a great example of that general thinking and eugenics-adjacent (and ablism-directly!)).