This is a diversion, but this has always struck me as a stupid answer to an even stupider question. I don't really understand why people think it's supposed to reveal some deep wisdom.

That's Zen for you. ;-)

Seriously, the point (for me, anyhow) is that System 2 thinking routinely tries to call a tail a leg, and I think there's a strong argument to be made that it's an important part of what system 2 reasoning "evolved for".