The Internet was fully functional and full of competent people when it was a much weirder place. Converting all spaces into the equivalent of dress shirts and blazers doesn't reduce anyone's competence but does make the experience so much more drab. Let people like things.

Why do you consider it so strongly to be inappropriate? It literally does not tell me anything about the user.

DOS was built in a basement. Pretty sure suit and tie wasn't the dejour whilst they were doing it.

Linux was a hobby project. Pretty sure that slacks featured more than a blazer.

Sorry for the snark, but would it kill you to change your definition of appropriate?