I think that in this case, though, we're referring to videos demonstrating the skill of the player at said fighting game. These can be entertaining because of the precision required or, uh, other reasons, but not, at least in my experience, because of the lack of skill of the players being killed. "Of course it's like that" is a valid argument here because, like, the point of a fighting game is to kill/KO the opponent (or, I guess, have them at lower health when the timer runs out). These videos showcase particularly entertaining ways to end battles.