Failing to document code is to the detriment of future maintainers. Anyone that claims their code is clear and ambiguous without comments is lying to everyone, including themselves, as a means to justify their intellectual laziness.

"I don't need to comment" is really "I don't want to document my work because that's boring and I'm much too smart to need to do that".

You're not that smart. If you were, you'd realize just how dumb everyone is, and thus, just how necessary comments are.