> Which ones?

Any that value correctness over speed. Banking, safety critical embedded work, aerospace work, etc.

> Why wouldn’t careful human code review and extensive test coverage suffice?

Because anyone who has been in the industry for a while knows that code review is not a substitute for intentionality and understanding when writing the code. To properly validate a change you must fully understand the intention behind it and the design at play, and then check the changes made against the system design. That is best done by a human subject matter expert (this is the role which software developers have traditionally filled, for anyone new to the industry).

> I work in one of the most conservative and highly regulated industries in the country. My company and every single one of my peer companies I have knowledge of has transitioned to almost exclusively 100% LLM-generated code (with plenty of human review).

That's called "being in a bubble".

> I don’t live on a coast and I have a large and broad social network. I don’t know anyone who still mostly codes by hand except the small amount needed to preserve some aspect of their skills. I’m sorry to say that if I did I’d consider them foolish.

And I think it's foolish to let your coding and critical thinking skills atrophy like this, but you do you.

> It’s much more likely that you are not a professional, or you are the one in a bubble.

Not even worth a reply.