Are they? I watch YouTube on Firefox all the time, seems fine on my machine.
I think maybe 5+ years ago there were some performance issues caused by YT relying on features that were only implemented in Chrome, but I don’t recall having any issues wrt that for years.
You’re probably just goofin, but maybe chill with the person just asking for reading material.
I’m also not a big fan of quizzes to figure out political stuff, but everyone starts somewhere.