I just started playing FFXIV, but I had the same problems in SWTOR.

Everyone was in such a rush they would scream at people who did not spacebar through the dialog scenes.

My first time through the dungeons I simply told the group it was my first time there and I was going to go through each cut scene, and dialog scene. As I was the tank, and my wife was the healer it did not really matter if they raged as it, we just booted them, but most of the time (At least 90% of the time) simply telling people we were new seemed to calm them down. Sometimes people dropped group, most of the time it was fine.

I would just make sure you are letting people know in advance that you are going to be watching the scenes, if they rage at you either wait for the vote kick, or drop and find a new group.