There is an official Fedora KDE edition for more than one year now.

I would really like to have one. But I own a XBOX Series X and realistically that’s fine for me to use. hardware wise, the Steam Machine is not even a big update.

I’ll wait 8 years for the next gen Steam Machine.

Also, do you need that long battery life? If yes, ARM or really new intel processors with energy saving cores seem to be the way to go.

I don’t have experience with it myself. But what I’ve read so far is, that the Snapdragon support by Linux is quite bad. Not sure if I would recommend that…

But the new Intel CPU’s are great. They are quite efficient and performant.