If people find them fun then let them do them.
I thought people just got over the whole "too many scooter flips" (stupid Mark haha jokes man)
It doesn't matter, you could easily say the same about bars pins or tailwhips but people don't.
HOWEVER, if they are doing bri flips or fsf fly out over and over, then yeah I have a problem too.
So get over it, no ones forcing you to watch the video.
Its a good trick, your never going to stop anyone from doing them.
Anyway thats my 2 cents, I'm not trying to offend you or anything.