It seems likely that, in the not-too-distant future, we will all be eagerly recording everything around us to prevent these kinds of injustices from happening. Imagine if you'd had a mic running, then played it back to the captain. Problem solved - and the FA would have gotten into trouble for creating a liability risk for the airline.
The problem is that recordings can be modified or erased and soon will be forbidden, the first problem they have they'll make a new law or rule, so you can not put the authorities against the wall, for your protection of course. I think is now forbidden to record policemen, not sure non US citizen here, in US while they're working.
Good luck to them with that. The only people it stops even today are people who don't mind being observed taking pictures. There are plenty of cameras that are easy to hide for anyone who cares to.
I can buy simple digital video recorders embedded in pens, watches, bluetooth earphones, baseball caps, ties, crucifixes and more from just a casual search of Amazon, for example, and that's hardly the state of the art in covert recording.
The more obnoxious anti-photographing policies people experience, the more attractive it will be to make recording devices less obtrusive.
