I don't usually see Claude leaving comments that are obviously out of date compared to the code. The problem is that the comments are just a dumping grounds for Claude's stream of consciousness, verbosely recording random bits of history and context that are true and at least somewhat relevant, but without cohesively explaining why the code is the way it is. And some sentences in the comments will be beginner-style restating what's obvious from reading the code.

Nah, it’s the typical Claude-isms, and way too much info, info in the wrong places, and putting lots of planning discussions into comments that are completely irrelevant.

It’s always “you explain only what but not why” or “this is way too much prose” or “these comments don’t belong here, they should be inline comments” or “this is completely redundant as it’s already obvious from the code”.

I do find that once I beat it into submission and the codebase is “clean”, the new code it generates gets better and better, which makes sense gives its pattern-prediction nature. But it seems like there is work to do for Anthropic in terms of getting Claude to not confuse code comments with dumping its interactive discussion state into there.