I'd say it counts as general user base, but does not count towards the Steam survey.

If Android share counts towards Linux gaming in general, then I think "Linux" as a whole (not necessarily versions or derivatives of Linux that users have the choice to install on their device themselves, however) wins handily. That's because billions of people are all playing Clash of Legends of Heroes of Genshin Tower Puzzle Blocks Crash Deluxe, or whatever the fuck, on their Android phones.