It's the iPhone who is preventing you, because Apple made it possible, so here's the scenario :
"Organizer : Hey apple, block this guy from taking videos of my event"
Apple : Oh no problem, he'll just see dead fish instead ROFL"
If the organizer does not want you to take videos, you should still be able to, but if you do or don't, it should be your decision not apple's. So who is telling you what to not film?
If the organizer does not want you to take videos, you should still be able to, but if you do or don't, it should be your decision not apple's. So who is telling you what to not film?