No, Fuchsia is a completely new OS, not using the Linux kernel at all.
woelkchen
damn, I was fine turning it down before finding out it had AI at the core.
"AI at its core" is a BS marketing phrase. Obviously there is no AI in the actual operating system core.
Yeah my Bazzite definitely doesn’t auto launch Steam. I think that might be an option during setup?
I installed it in a VM and after installation Steam launched. Didn't check if that persists after several reboots. Why would I?
Then I tried Aurora and with the exception of a Terminal app in Plasma's quick launch panel and no gaming launchers installed, it's pretty much the same thing, so might just as well recommend Aurora instead of Bazzite if the person in question doesn't care much about gaming. It's the workstation variant of Universal Blue.
That approach uses virtual machines. While that is possible (otherwise we wouldn’t see it), it is probably not really optimized for gaming.
Whether or not it's optimized for gaming is up to Google. The technology to bring Frame's ARM Steam client onto Android exists.
It is, but my assumption is that ARM-based linux and ARM-based android require a different codebase.
https://www.androidauthority.com/run-desktop-linux-apps-on-android-how-to-3586539/
Writing a full Steam client for iOS or Android would be a huge amount of work independently from that.
https://www.androidauthority.com/run-desktop-linux-apps-on-android-how-to-3586539/
it doesn’t auto launch anything on desktop
I installed Bazzite just last weekend and I was definitively greeted by a Steam client login window right after logging into SDDM. No idea what you're talking about.
a fully functional Steam client would still be quite a surprise.
What's running stand-alone games on Frame then if not a fully functional Steam client?
Just FYI in case you don’t know - SteamOS has changed and is now based on Arch, which means Bazzite is still fundamentally different.
Both are immutable distributions, meaning software installation via Flatpak and Distrobox is exactly the same.
System-level differences are mostly irrelevant which is a fundamentally different approach from Ubuntu, Mint, etc. where users are expected to juggle with PPAs to get newer drivers on their ancient Ubuntu LTS base.

Steamworks SDK supports Android now. Obviously, should there be an official full Steam client for Android, the preferred route is for game developers to release native Android games with Steam integration.