This is self correcting. Code of this quality won't let you ship things. You are forced to understand the last 20%-30% of details the LLM can't help you with to pass all your tests. But, it also turns out, to understand the 20% of details the LLM couldn't handle, you need to understand the 80% the LLM could handle.
I'm just not worried about this, LLMs don't ship.