Exactly this. I don’t own any Steam hardware, nor do I expect to any time soon. However, I don’t know if I’d be running Linux as my main daily driver if not for how straightforward it is to game on Linux nowadays, thanks largely to Valve’s efforts in this area.

I did dual boot with Windows for a while, but I found that the inertia of rebooting made me more likely to just use Windows. When I discovered that basically all of my games were runnable through Proton, I got rid of Windows entirely.

I feel a lot of gratitude for the Steam Deck existing, because it makes things way easier. It’s not down to Valve’s efforts alone, but providing the solid starting point has lead to the coagulation of a lot of community efforts and resources. For instance, there have been a couple of times where I’ve had issues running games, but found the solution in adjusting the launch options, according to what helpful people on protondb suggest. I also remember struggling for a while to figure out how to mod Baldur’s Gate 3, until I found a super useful guide that was written by and for Steam Deck users. The informational infrastructure around gaming on Linux is so much better than it used to be.