I know several guys in our circle of friends who are ex AT&T employees now working for smaller companies doing CAD design for industry. One of them has his own printer at home and has done some amazing work for fun, and some other stuff for free for a model railroad guy.
I worked with CAD in the early days, but in architectural work and never did much in 3D. The first rule if CAD has always been “Never draw what you can copy” so as more and more work is out there, people will become proficient at modifying files into new work.
Yes there are people out there doing poor work, but that’s the deal in every profession.