This is unfortunately going to end badly. We're still in a fairly decent position on the diminishing returns curve for banning offensive content, but it's already a far cry from what people were talking about censoring even a year ago.

The logical extreme for this sort of thing would be the censoring of anything that isn't as bland and boring as a history textbook (for exactly the same reasons). I expect there will be stronger and stronger pushback before it goes this far into the ridiculous, but this will be the general direction that every offence-taking group pushes things in.

The left can't take a joke. The right can't take criticism of orthodoxy.