It’s a good question but I honestly have no idea how that works even today with windows actually because I have not owned a laptop in 15 years. In my mind, the laptop manufacturer has to guarantee compatibility with any OS it provides but even then, some support from the OS side may be needed. The best way to handle that would be if the manufacturer started contributing to the Linux kernel and provide full driver support because then everybody wins in the long run.
It’s also great when programming. I usually have an IDE/text editor, documentation/browser, email/teams and a couple of terminals open at all times and being able to see all of them at once is really helpful.
Granted, you could get the same with two 27" monitors, but add ultrawide gaming to that and it’s pretty much a no-brainer for me.