Hi Andree,
in my experience a lot of the bigger facilities running Baselight try to keep their colourist colouring, which is what I think Derek is focusing on in this tutorial. The fixing & finishing would probably be passed on to the GFX department. If you want the in and outs of object removal, look at the Paint Fixing in Resolve Fusion course by Lee Lanier.
I'm a freelance editor/colourist and unlike big facilities I have to do as much as I can in Resolve, editing, colouring & fixing shots. So I've found all the Fusion ccources very helpful, worth a look at.