I would also prefer to buy an "official" Linux version, just to vote with my wallet. But the only issue I ever saw with my XPS 15 on Fedora was related to udev

I would also prefer to buy an "official" Linux version, just to vote with my wallet. But the only issue I ever saw with my XPS 15 on Fedora was related to udev and external displays with the Dell USB C dock. Every time I connected and disconnected, the display IDs would iterate higher, which threw off my sway config. Relatively minor issue, and recent updates seem to have fixed it.