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
Darth Sidious spent the first two movies cosplaying a senator. He is the titular Phantom Menace, as in “hidden”. Palplatine would absolutely stay hidden if everyone thought he was dead.
He stayed hidden during that period because it served him. He showed his true colors (literally) in the fight with Windu and dropped all pretense. He didn’t even try anymore in the Senate. Just went full authoritarian and made it all about himself. The next 20 years were no different. Fuck sakes, he was still cosplaying as a senator but openly running around being a Sith and taunting Jedi as seen in the clone wars show.
While he does keep a low profile when needed for his plans, he will kick open the doors and announce his presence when he is confident his plans have gotten to a certain point where he’s sure he cannot be stopped. Saying he would absolutely stay hidden 100% is to ignore a massive amount about the character.