1000x developers, ahahaha! Come on now, this is too comical. Even 10x is extremely rare.

The deciding factor is not speed. It is knowledge. Will I be able to dish out a great compiler in a week? Probably not. But an especially knowledgeable compiler engineer might just do it, for a simple language. Situations like this are the only 10x we have in our profession, if we don't count completely incapable people. The use of AI doesn't make you 1000x. It might make you output an infinite factor of AI slop more, but then you are just pushing the maintenance burden to a later point in time. In total it might make your output completely useless in the long run, making you a 0x dev in the worst case.