I don't see any NY-centric attitude on this board at all. It's a simple matter of fact that pretty much everything on Broadway comes from somewhere else. Like New York itself, Broadway is a melting pot. So you're entirely off base to make that accusation. You were obviously reacting defensively.
As a matter of fact, of the two shows I've posted about with the been most excitement recently, one started out at the Hartford Stage and then went to the Old Globe before coming to NY and the other started out at the Barrington Stage. It would be impossible to tell you how man of my New York theater experiences were from regional theaters because I don't judge them that way.
And not everyone on this board loves in New York. Most, I would imagine, don't.
But back to this video, theater companies should know that a hastily assembled video does them more of a disservice then they can possibly imagine: The Internet is global not local, and it is up there for all to see.
It's entirely unreasonable of you to expect the denizens of a website to refrain from reacting to a video advertisement. Once something like that is posted, it INVITES reactions automatically, whether those reactions are good or bad.
You can't stop the Internet or scold the people who react. I know because I've tried in vain to get posters to stop posting "reviews" of first and early previews. But the Internet is a brave new world, made up by opinions.