I am actually so serious I think it really messes with a childs creativity and joy to tell them to never make a mary sue OC. Like that unbridaled form of joy where you make a self insert OC who super cool and everyone loves them and they have every superpower in the world SHOULD be something a kid makes, it nourishes their ability to create things for fun and not be stifled by "oh but what if my character is too overpowered and cringey...". whatever
The problem w writing fiction is that you'll be like tee-hee I'm going to write a story about a fucked up little scenario that's got nothing to do with anything in real life, just some pure messed up nonsense, and then you finish it and take a step back and go aw rats I made a metaphor again
I know there are people who avoid OOC interaction entirely to avoid meta knowledge tainting their portrayals and I definitely can't live like that but I've always had memory issues and there is so much different stuff bouncing around in my head anymore that I don't know how to keep straight what has been revealed ic and what hasn't anymore :') constantly paranoid I'm going to unintentionally metagame because I can't remember anything ever