And there's nothing even vaguely approaching a hacker uniform is there?

looks around the office at a sea of jeans and t-shirts

The issue with this argument is that almost anything you can say about suits applies to all clothing.

It's no co-incidence that during the dot com boom managers started dressing down. Did that make them better managers than when they wore suits? Or were the good ones still good and the bad ones still bad, they'd just adopted a different uniform?

If you pick on a particular uniform (in this case suits) rather than the concept that uniform matters then you don't solve the problem you just move or hide it.

It's no coincidence that fashion and faction are etymological doublets.