As a healer if someone makes a fuss about someone watching a cutscene I will ask for them to kindly be quiet or they can wait even longer waiting for a replacement healer. They shut up 99.99995% of the time.

I actually don't care about the 30minute leaving penalty. I can cook myself a meal, code/study, watch some TV shows...

However what I do not like is sitting there watching someone get abused. I will leave a party if someone threatens another party member, I do not tolerate it and as a healer I can enforce that.

Either that or I initiate a kick vote. I do not stand for this cruelty towards players enjoying a game that is meant for fun.