I agree Steam Deck played a role, but they didn’t sell enough to make that large of an increase. That’d be insane. However, it did cause the appearance of gaming on Linux to change, which is the thing that was holding back a large number of users.

I had used Linux several times over the past decade or so. It was never my main OS, and I had actually stopped using it completely for probably 5 years, maybe more. This is exclusively because gaming on Linux was an issue and I didn’t want to swap OSs just to play a game. Last year I went 100% Linux. I know I’m not the only one, and I’m extremely confident that the increase is mostly this, not the Steam Deck. The number of Steam Decks sold seems to be maybe 6m on the high end of estimates, which is not enough.

The Steam Deck was a catalyst, but it is not the source of the change.