People don't care by and large that the steam deck runs on Linux, they care that a trusted company (probably the single most trusted company in gaming) released a hardware gaming device. If valve had put the same effort into the same hardware but made it Windows centric, most of its problems would go away. They just have very good reasons for trying to break away that platform.

I used the word "switch" rather than "use" on purpose. Nobody with a steam deck is using it as their primary computer or gaming device. Nobody is going to at least until the biggest stuff out there runs on it