Sensibilities change. The sense of what is and isn’t punching down changes. Even the appetite for punching down changes.
People who whine about “PC” always pretend like it’s the death of comedy or speech or whatever, and yet… there are younger people building great careers!
And yes, there is a real worrying erosion of free speech - but 98% these people could keep saying exactly what they’ve been saying - they’re just not getting the laughs they think they’re entitled to.