Whoever is submitting the code is still responsible for it, why would the reviewer care if you wrote it with your fingers or if an LLM wrote (parts of) it? The quality+understanding bar shouldn't change just because "oh idk claude wrote this part". You don't get extra leeway just because you saved your own time writing the code - that fact doesn't benefit me/the project in any way.
Likewise, leaving AI attribution in will probably have the opposite effect as well, where a perfectly good few lines of code gets rejected because some reviewer saw it was claude and assumed it was slop. Neither of these cases seems helpful to anyone (obviously its not like AI can't write a single useable line of code).
The code is either good or it isn't, and you either understand it or you don't. Whether you or claude wrote it is immaterial.