I suspect that it has to do with any trend that gets too big, and the only antidote is to make the rules into a moving target. This happened with punk rock when

I suspect that it has to do with any trend that gets too big, and the only antidote is to make the rules into a moving target. This happened with punk rock when I was into that. At some point, the punk bands rebelled against punk fashion, and started showing up in worn but otherwise regular looking street clothes.