Your own friend group is the definition of selection bias, though - at the least, they know you and probably have similar interests/hobbies to some degree, and I daresay you’ve probably said something about Linux to them before.
And there’s a whole, active subreddit for people who put windows on steam deck - apparently the initial problems people had with it have been getting ironed out more and more.
I don’t know which is more common but I’d need to see actual data, either way.