Floyd knows more about weird boxing stances then Conor McGregor, Kevin Lee, me, and everyone else in this thread put together.
What you see on TV is not the totality of what world-class people can do. That's the best possible strategy they can use against their world-class opponent. They get to that level by trying and studying all kinds of things, formally and informally, and keeping what works best. So world-class boxers know all kinds of weird things about boxing that you never see in their PPV fights. Watch the clip of Bernard Hopkins explaining defense to Rashad Evans. He talks about Bruce Lee's fighting stance, and even how turtles use their shells.