From what I read, it all depends on what the project is and what the expectations are of the artist. If you're on a deadline and need to crank out something that looks good for a client who doesn't have a huge budget, why not? I hope that perhaps they clarify the terms of specific galleries to stipulate: must be modelled, shadered and rendered by artist.

Monterey/Mint21.x/Win10 - Blender3.x - PP11.3(cm) - Musescore3.6.2

Wir sind gewohnt, daß die Menschen verhöhnen was sie nicht verstehen
[it is clear that humans have contempt for that which they do not understand] 

Metaphor of Chooks