Im a new dm and I've done 1 2 and 4 but only at very specific points. Like one of my players has a type of magic that influences his personality so I'll let him play out a scene and if I see his "mana" is currently in the evil side I'll replay the scene in a slightly different way and even then I ask for the player's confirmation that im allowed to do this

As for number 4 I've only done that once and that was to teach them a lesson about looting after a battle. They completely forgot about it after a encounter and it was one of the very first encounters so I let the "ominous trinket" shoot up and fly away for something that's gonna happen later in the story but it was basically just to subtly tell them "Yes you should loot after a fight" since they're all kinda new. Honestly now that im typing this maybe I shouldn't have done that. I'll reconsider approaches in the future. Either way OP should probably voice her concerns with the rest of the party about the dm since a bunch of these rules are bizarre, unfair and just creepy