Charlie not knowing his mechanics is sort of par for the course. I like his content, it's very entertaining, but it's always a skim of whatever he's talking about. The worst one for me was his Ninja Gaiden (at least the first one) videos. It just seems like he made those videos for his patrons, not really because he loved the series, and it shows. He didn't even go past Normal on any of the games, and missed a lot of what makes the games great. He also never mentioned Itagaki at all, which is bizarre.
I don't want to be too critical, because at the end of the day, he seems like a nice guy who just wants to share his love for action games, even though he may not be the most knowledgeable person. It's not like he's claiming to be a master at any of these, and he does a nice job selling them to new players. But yeah, in general I wouldn't go to his videos for super in depth analysis. He just likes making action game videos.
My main problem with a lot of action YTers, is that they look at everything through the lens of DMC. If a game doesn't have hard lock on, it should, if a game doesn't prioritize crazy style (Ninja Gaiden), it's a lesser game, if enemies dictate the flow of battle, rather than the player, it's not as good (KH2FM). Stuff like that. It just seems like a very narrow view of the genre, one that I used to have until I started talking with people who are obsessed about these games (including you guys). I used to shit on God of War because, "It doesn't have those amazing DMC combos and jumpcancelling bro!" I regret that, because I went through the GoW series looking down upon it as something inferior, when the two series are setting out to accomplish different things.