Because the left-leaning orthodoxy of the moment is that you should under no circumstances read or watch any conservative media.
Presumably the right-wing are just as capable (and historically have been the aggressor often), but the left have mastered it as a form recently.
As for providing some evidence of cancel culture and deplatforming, somebody would have to have been living on Mars (or have blinkers) to have missed the odious practices (as evidenced in the OP!) that the terms were invented for, and I'm not sure me spending my time googling and linking examples is going to help in that case.