Well to be fair, it's a conversation he's had a lot. As for the casuals thing, yeah it basically just boils down to don't be an asshole. Everyone starts off bad. They'll get better eventually if they care enough. That being said, if you go on bitching and making excuses and just generally acting like scrub, you deserve to get clowned. Also, the reverse applies too. Ever since SFV released and that whole shitshow went down, I've been seeing an increase in...I guess you could call it anti-competitive mentality. Even longer if you include Smash. Personally, I'm not competitive either, but it does get annoying seeing it all the time and seeing people act as if "fun" isn't completely subjective.
I also find the people who brag about how they're bad at fighting game and don't care about getting good or playing other people and so on to be really insufferable.
To go back to the whole fighting game difficulty thing, I don't mind simple games existing as a whole, but I do hate the recent trend of dumbing existing franchises down. Also just the fact that it feels like pretty much every fighting game is being simplified now, especially the big ones. Some people like harder games, but it feels like those people are being left behind and if they try to vent, they just get dogpiled and accused of gatekeeping and told to deal with it or stick to old stuff and I hate it.