Or maybe it's a joke on a kid pretending they're an adult and ready for a TTRPG with adults? Because that is definitely annoying. I haven't played random online pickup games in forever, but I was extremely opposed to playing with kids, for many reasons. Teaching them how to play is one thing - I helped run a DnD club at the school I work at - but that's definitely sharing the hobby rather than games that I actually enjoy for myself.