I'll disagree with most. What they're doing is terrible. By encouringing riders to join in on this nonsence fad they're taking good quality frames and destroying them forever.
We dont know that any of theses woud be heading for the trash head. I think, in most cases, thats a convenient excuse to justify butchering a frame. In a year or 2, when these riders realize a fixie/SS bikereally does suck to ride, and the trend wears off, there'll be more hacked frames on the market that will go to the landfill because they've been drew'd.