Its a hassle-free operation to install Linux from the provided .iso's, or use the community-provided images, so really .. there is no hassle, as you perceive it.

Linux runs great on it and as of 3 days ago the remaining issues (Wifi/Bluetooth) were resolved.

I love my GPD Pocket!

Rumor is that Windows 10 installations on mobile devices are highly subsidized by Microsoft, which is why WIntel tablets are cheaper compared to same specs android equivalents.