Professional artists are also an interesting choice. If they are in a major art studio, they are probably having to use custom tooling there already. And Wacom is very well supported on linux.
I have a game that works fine with proton on one machine, but doesn't on another machine. But works fine with windows on both machines.
I tried for hours to get it to work on the other machine, since it clearly can. No luck.
In the end with proprietary software, it's always a black box.
This is also an odd rabbit hole to fight about. I've had so many windows boxes that couldn't play games throughout the years that I've basically accepted that games programming is hard. :D