I'll go first. Mine is that I can't stand the Deadpool movies. They are self aware and self referential to an obnoxious degree. It's like being continually reminded that I am in a movie. I swear the success of that movie has directly lead to every blockbuster having to have a joke every 30 seconds
Most movies have always sucked. We remember the good and forget the trash, so the past seems better than it was. Social media and other forms of entertainment have changed things, but never underestimate survivorship bias and nostalgia.