Code review has become unbearable because before AI, developers were reviewing code as they went writing it in the first place. Granted, never perfect and why a second person reviewing code was (is?) a best practice. But effectively there was always some level of code review happening as developers wrote code.
I fear it is way more boring to review financial and medical documents completely written by AI than it is to write (and at the same time review) by yourself. And way more dangerous to ship mistakes than in most software.