Oh right for the immersion.

Hey look, I'm so close to this guard he can feel my breath, but don't worry, since I'm behind him he won't notice a thing!

Oh noes, they got an assault craft! What'll we do.. oh nvm, here's a conveniently placed anti-air cannon. Yes, the story is so good and the game is so immersive, holy crap!

If I notice I'm the only new player in that run, then yes I consider it the polite thing to do to skip the cutscenes and watch them later. I don't know if they would've cared or not, since nobody really cared for me being a firsttimer, but I would consider it rude to waste the time of 7 other people. In return for the "awesome" story not being fluid and my "immersion" being broken or something, I got a fluid run with barely any mistakes. I'd say I struck a bargain there.