It is not a steam user percentage, but according to the site by user data from web pages, it explicitly mentions search engines and social media. I doubt that the steam deck is extremely significant here.
Oh yeah, people who need more power definitely want something else. It’s all I need really. I’m about to inherit my daughter’s old gaming laptop though so I’m not sure what I’ll do then. Definitely Linux with a small partition for windows to play some VR games. I’d say I’ll still use the Steam deck for most things though because it’s so portable.
Yeah, these results are skewed because it's only desktop Linux, so mobile devices (which I believe the Steam Deck and other portable PCs/gaming devices fall under) aren't counted, and those primarily run Linux. It seems that the foothold of Linux never was, and probably never will be, the desktop PC.