

I want everything to be owned by myuser, group media
Wait, “everything?” Yeah, that’s probably contraindicated. You don’t want to be changing ownership of stuff in, say, /etc or /bin or whatever to your user. For the most part, stuff in those locations should be owned by root:root. If there are exceptions (things that should be owned by root:<something else>), the package manager will make sure they’re set as they should be.
Elon’s pet LLM chat bot. The one that he recently tweaked temporarily(?) to spread South African “white genocide” conspiracy theories on Twitter because… well because what else would you expect Elon to spend his time doing?