My university SE class was during those heady days of MDA, and my opinion, nicely summed up in this article, hasn't changed one bit:

Yes, I could create a class diagram as a PIM; press a button and create a PSM; and press another button and generate Java code. But the Java code had all sorts of holes in it that I had to fill in — and if I changed the model in any way, half of the code I'd written would no longer compile, let alone run correctly. In other words, OptimalJ automated the most trivial things, leaving all the hard work to the end user.

Unfortunately while MDA died, this same scheme is dominant today for OpenAPI definitions with exactly the same problems.