The drop in R rated movie share in the box office is almost certainly a result of streaming, not a change in cultural taboos. The linked chart only includes people who paid money specifically to watch a movie in a theater, and does not include movies watched on Netflix or Hulu.

> created a backlash and a desire for retaliation for anyone seen to be in the same camp as Trump.

Trump also demanded basically anyone who was ever insufficiently nice to him get fired. If anyone was for “cancel culture” it would be him. But like everything else in his life, he wasn’t very good at affecting those changes.