My personal theory behind the increasingly common levels of absurd tit/dick/lips/ass to body ratio, is that the bimbo body is their fetish. And as everyone with a strong fetish knows, indulging in it on the regular normalizes it to the point that eventually it stops "hitting the spot". Because these devs are into this as a fetish, them constantly working on the game means constant interaction with the content, meaning the spiral of degeneracy advances faster for them than it would to someone that just jerks it to the stuff.
Basically, they seem to have reached the point that they *require* hyper absurd bimbo bodies to even have a flicker of attraction or interest in a character now.