Oh yeah, I agree with that worst offender - features that don't exist that it quotes so confidently.

Especially when libraries get updated constantly - I ran into cases where it wrote functions based on previous versions of the library, where the function names and signature had already changed since.

I haven't tried yet, but I bet if I used a version that has web browsing and can read the latest documentation, it would do a good job and save me having to read the documentation myself and try to work it out.