I hate doing a lot of code review all at once, and AI vomits a lot of code. Hopefully the mistake is obviously big and up front, but all too often the mistake dwells in the details that I would likely be too tired to notice after a lot of plausible code.

With human code to review at least the volume is generally workable and when it's wrong, it tends to be more obviously wrong. A human that takes care of very detailed facets with care inspires trust in their thoroughness, but codegen looks that way without the thorough consideration.