We had a brother move in from Texas and he wore Bolo ties and nice cowboy boots and western style suit jackets. He was as sharp dressed as anyone at the hall, just Western style instead of Wall St style.
But - that style didn't fly with the elders. He had to switch to "normal" ties and lose the boots and get dress shoes. The jacket was okay but he ended up switching it as well....it just looked goofy without the rest of the ensemble.
Again - it's about control. If you can make followers adhere to dress and grooming laws, you know that you've got them under control. If this guy had said, "I'm not changing my style" they would then know they had a trouble maker on their hand.