Honestly that's the point of those videos though. They're entertainment.
No one wants to watch heavy roleplay all the time. Sometimes you just wanna see the consequences of a heavy roleplay scenario. It's not like people in those videos are actually deathmatching, there's been roleplay that leads up to such events.
IMO they're fun, although I must say I really like those kinds of videos when they have a backstory attached to them as well. Makes it that much more interesting to watch.