I have personally had success telling Claude that some AI-written system is too complicated and ask it to rewrite it in a more logical way. This sometimes results in thousands of lines of code being deleted. I give an instruction like that if I see certain red flags, eg:

1) same business logic implemented in two different places, with extra code to sync between them

2) fixing apparently simple bugs results in lots of new code being written

It’s a sign I need to at least temporarily dedicate more effort to overseeing work in that area.

I somewhat agree with the AI psychosis framing of the OP. It takes some taste and discipline to avoid letting things dissolve into complete slop.