I suspect the “cloud native” marketing term in this context just means you can run the same image file in a vm, vps, bare metal, whatever.
…yeah that’s what makes it suspicious. Alone it can be a good thing but why rush to mention it for a fricking gaming/home distro? As if running gaming/home distro anywhere else than as close to the hardware as possible was somehow inherently normal or even good.
(The idea of cleanly separating “user user space” does sound inherently good, if achievable…)
Again, who are they marketing to?
Funny enough I had not fully realized this about Steam Deck myself, because I kind of made a special exception for Steam Deck to prevent myself from nerding out on it too much: this is strictly for fun!
(That’s why I only changed hostname, replaced the default terminal emulator and set up Syncthing. Oh, and SSH access but that’s it, I promise! :D)