A couple of jobs a contractor I used for a long time (before he, sadly, retired) involved some drywall. He got drywall specialists to do it. He said they were far faster and cheaper than him doing it himself.

I do have a guest bedroom in my house where I once had some time during a holiday shutdown when my job situation was a bit perilous. I had some crumbling plaster so I put some drywall up. It's... functional.

Painting is one thing I do myself. I do it enough I got reasonably good at it and--for touchup--I can reasonably take shortcuts that someone I was paying couldn't.