This is simply the race to the bottom having to contend with the slower-degrading popular conception "basic human decency". I don't think it has anything to do

This is simply the race to the bottom having to contend with the slower-degrading popular conception "basic human decency". I don't think it has anything to do with platforms, more that platforms will all hover around the same boundary. All media platforms have done this for ... 100 years? more? It's not unique to the internet. It used to be called "pushing the boundary" back in network TV's heydey.