I’ll first admit I predicted Valve wasn’t bothering with a Steam Machine again. I was proven wrong.

But I still absolutely don’t see it being more popular than the Steam Deck. They don’t have the production scale to make them at the Xbox / PlayStation hardware-per-dollar values, so they’ll still be an enthusiast item for people aware they’re buying a prebuilt PC.

So yes, you do already see this; indies target the Steam Deck as a supreme metric for Linux compatibility (and if someone complains HDR doesn’t work on his desktop Mint install, well, whatever). Valve even promotes some store presence to indies that do a bit of work to certify this. We’ve seen lots of games get patches mentioning Steam Deck related fixes - even when the game is a windows build using Proton.