It's unfortunate but look at it this way, if it wasn't for the "obscure currency" (they were probably farming light) then would there have been enough people to queue for the trial at all? Would you have waited 2 hours or more for a group?

I don't blame you in the slightest and I have had several several very nice and compliant groups with new people so it's out there. Something you may want to do for future trials is start a Party Finder group. Put on the PF that you want to watch cutscenes and slow and easy play.