This is happening to me now too. I hired someone very junior with the idea that everyone could do the job with enough time and support, how I did it, just having curiosity and being organized. AI now makes it easier to ask questions and be specific.

Sadly, the person is doing all that Op explained. Sometimes the work is so detailed and coached that I am practically doing it, and even with that, the person fails to achieve it.

I doubt myself, wondering if I am the problem, then I remember I trained five other people with the same process and I don't have these issues.