Since most users have upgraded to Windows 10 you would have to assume they have machines 2 to 3 years in age.
if you run the https://www.cnet.com/how-to/windows-11-microsofts-pc-health-check-app-can-check-if-your-device-is-compatible-heres-how/ to check whether your machine is compatible. I just executed it on 3 machines and they all indicated they will work on Windows 11.
Since i use nothing but Intel processes maybe the AMD CPU is at fault not sure on your setup.
Finally, 32 bit applications will continue to work on Windows 11 so WP should continue to work.
I do not think most people will flock to Windows 11 immediately, Microsoft will offer it as a free upgrade.
Moving to Linux for most folks will never happen, it has been around for years, it is stable but the learning curve is huge for the average user. You may be valid on getting a Linux version but Corel has to figure out the amount that will move to that OS.