"TDD" isn't some magic trick. The tests codify the expected behavior. But if you don't review them for correctness, if you let the LLM build them blindly, then you have no idea what those tests assert and can make no claims about whether the code then does what you expect.
That's fine. That's your choice.
But you have to acknowledge you've chosen to accept that you personally cannot vouch for the quality or correctness of that code.
I fully expect this to be the direction the industry goes, where increasingly complex systems exist that no human actually understands or can reason about.
I think it's bad for the industry. Very bad.
But I'm not making those decisions, so... it is what it is, I guess.