Sorry, wasn't trying to dissuade you against the Odin, those kinds of android handhelds are neat as well. I think Ayn actually makes a hybrid android/x86 machine as well, although it doesn't perform as well as a steam deck or rog ally or comparable.
Really it's not the steam deck itself that is so awesome (although the instant suspend-resume is a killer feature), it's steamOS that is the killer feature. And while you can't straight up install steamOS on other machines, you can install HoloOS which is a community equivalent, or just throw ubuntu or similar on there and then install steam and it'll work the same way. It's the big picture mode stuff, and the steam proton stuff, that makes the "Steam deck" so killer, and that can be used on any x86 portable. That's the single coolest thing about all these PC handhelds -- it really doesn't matter which manufacturer you go with, they're all interoperable and play the same games. In the future, there could be a different x86 handheld not made by valve that would be just as recommended as the steam deck, because the software is what is special.