How long can a junior dev last simply using AI day in, day out? Is it enough to ship high quality products? I assume at least most of them eventually learn the

How long can a junior dev last simply using AI day in, day out? Is it enough to ship high quality products? I assume at least most of them eventually learn the proper skills when they are no longer "junior" devs. It seems like the usual "fake it til you make it" style a lot of people do to get by.