This needs to be stopped, and immediately.

[Sove92]

Report them and they will be punished for it. It's considered an abuse of the votekick system and is totally against the rules.

SE already gave their blessing to kick players out for watching cutscenes.

Although we understand the impact that is caused after being removed from a duty finder group, please be aware that Game Masters will be unable to take action if a group member has been removed due to a player dispute, or if their game style differs (i.e. skipping in-game cutscenes, disagreement on using specific boss encounter tactics etc).

To avoid such incidents in the future, we would advise to speak with either the group leader or fellow party members when joining a new group to discuss any specific party restrictions that need to be addressed (i.e. any loot priorities, allowing group members to watch cutscenes etc).

[Sadana]

SE already gave their blessing to kick players out for watching cutscenes.

Wow... that sucks. ; ;

I guess all we can hope is that SE will add "Please use the PF to indicate you want to watch cut scenes in this dungeon or ask your friends and Free Company to go with you" instead of "Use the DF to enter this dungeon." :/