Am I the Asshole?

Every person involved in a conversation has to be able to hear each other speak. The only one listening to your videos is you.

If you had earphones, you wouldn't need to listen to their discussion anyway, as the earphones would take care of both problems simultaneously, making you the only one that hears your videos, and making sure you can't hear other people's conversations.

Being considerate won't get you noticed, but being inconsiderate certainly will, in all the wrong ways.