Quote Originally Posted by Ikono View Post
Why can boss fights be started while first-timers are watching the cutscene?
Short answer- to not have mechanics enforce any progression limitations on the people who wish to go faster.

It is a player driven function. An agreement between players, if need be. If people wish to stop and smell the roses, make your request known (either via PF or at the beginning), and follow what the majority of the party wants. If you are in the minority, you just deal, or leave. Enforcing this with mechanics would be far worse for the future of the game.