> I do admit that SteamOS is obviously contributing to Linux Desktop market share. I just think it is a complicated situation.

Agreed. And IMO, the thing is that you can benefit from the work made on SteamOS on any Linux Desktop. By making most games run on SteamOS, Valve contributed to make Gentoo a better platform for gaming.

> If most users of the Steam Deck don't care or really know that it is Linux there is not much getting in the way of Microsoft coming in with their new handheld/OS and eating up that market if they can get the OS to perform as well.

Sure. But what I see is really the other side: if SteamOS is relevant, then game devs will have an incentive to support SteamOS, which gives the opportunity for gamers to move to SteamOS. Now they are on Linux, so they can start using software that runs on Linux.