Seems pretty stupid. I've been going to the haymarket practically all my life and never noticed a problem with the dress of people or hooligans.
Yesterday I actually took a little spin through the "west" haymarket to see what it looked like now that it's almost finished. It use to feel like a genuinely quaint area without the artificial planned feel that many urban hot spots have. I think that's all over now, and things like this just add insult to injury as all the chains and franchises prepare to roll in.