There is probably little economic incentive for a Linux native version of Gig Performer but I would use it if most Windows plugins would still perform well under yabridge and wine. Some manufacturers make Linux versions of plugins.
My music workstation has a cpu that is not supported for Windows 11 so I will be migrating to Ubuntu Studio.
My guess is Gig Performer would not perform well running under wine. Therefore, my gig laptop will stay on Windows.
Get a Mac instead 
I’ve been using older refurbished Macbooks and they’re much less expensive.
You’re right about Linux — first of all, the Linux desktop market is only about 6% and only a tiny percentage of that group would also be performing musicians. Further, the vast majority of Linux users want (indeed expect) “free”
It’s true. I wouldn’t expect existing Linux users to join and contribute to the paying GP base. The question is more likely; how many existing Windows/GP users are fed up enough with both Apple and Microsoft to be willing to transfer to a Linux platform. Add me to that count.
+1 for a Linux variant. I see many users switching to macOS, but I also see long-time Mac users moving to Linux. Looking ahead, I believe the relevant platforms will be macOS and Linux.
Where are you seeing that? MacOS is already running BSD Unix
Is this really true?
I saw Mac users moving to Windows, but never heard that anyone moved from macOS to Linux.