The base of your argument is not getting warned about breaking the rules.
You don't get a real-life warning when you commit any type of crime, be it speeding, stealing, jaywalking, etc. The plea of not understanding/knowing/reading/comprehending the rules, because it was not announced/rubbed into your face at the point of registration, is asinine.
People ignore reading the content guidelines when uploading their books. It stated everything, way before you or most complainers even registered.
Too bad. There is nobody who has to give a grace period, warn you, or anything. Break rules or break laws, get the consequences. It is that simple.
PS:
I wrote fanfics myself. Never monetized them, because it's against the rules. That's simple. Do I want to earn money with my writing? Duh. But I'm not delusional, so I have a normal job to earn a living.