That they do actually hit each other and can’t rely on magic camera shots? So if one of them doesn’t do it correctly or the right way they both are in physical danger? They still connect when the stomp their foot for punch effect, they person absorbs it and plays along. Its not “fake” but it is.

Because if not, you are the one that needs the news……

Do people seriously think every scene is magic camera angles? Stunt people know how to take blows and absorb them, it’s because it’s required for realism in some movies. Not every movie can get away with cheap camera tricks that are painfully obvious and break immersion.