I tried AI-everything (apart from code review of course). But it's just too hard. Letting the AI do bigger things results in subtle, hard to find, but devastating design fails and errors. It's fractal. No matter what layer I look at, it's always sort-of working but also bugged in subtle and sometimes hard-to-fix ways.
So I don't do that. Instead I use the AI as an assistant while I still do most of the actual work. I downgraded my account too because I never reached the limits for a while.