Thank you for sharing that. I'm sure it's not easy to share such personal info. Glad everything worked out for you and your mother.
Yeah, I'm glad too.
I think it does have something to do with the single parent thing. I don't know about this guy, but I didn't have my father around either and my mother always saw it as difficult to discipline us.
In general, since she worked full time and also had two kids, she was just happy that we weren't going out, getting into trouble. Thus, I was always able to do whatever I wanted, even from an early age, so long as I wasn't brought back home by the police, or anything like that, it was fine.
I wouldn't like to infer, but it's possibly the same situation here. She hasn't really disciplined him for a long time, she just shouts and they argue. He's likely learned that she doesn't really actually do anything, so he doesn't do anything either. He's likely had no authority figure in his life, and I would speculate, he also doesn't know what he's doing with his life, he's not good at anything, doesn't really like anything, the only thing he really enjoys is his video games.
I'm sure some of the rudeness, must be for the attention he gets from his streamers and whatnot. As far as streamers go, that's this guys unique selling point. He has nothing else unique, or interesting about his stream, and it's evident that his followers are amused by the conflict between him and his mother.
I think he just needs to move out, learn a little about the real world. If I was his mother I would be pressuring him to move out and go to college, or something like that.