If you do that someone still needs to make sure the details make sense which, from experience, sometimes they will and sometimes they won't. When I open tickets using automation I often back into the ticket from a running implementation that passes tests so the description is at least internally consistent but there are often still issues that need corrected.

That's what a good PM and developer pair should be doing, it's just that it's a lot faster for both of them now to review and work in tandem to get the feature done, because the bottleneck is the code generation.