Yeah the price increase on the AYN sucks, but I brought them up as examples of great devices that run PC emulation quite well in a very small form factor (at least compared to PC handhelds).
Also I 100% agree that ARM is the future here, and that Valve is probably testing the waters with Steam Frame. It all fits in just way too perfectly. That being said, while I would hope to be wrong, I could imagine them completely moving to ARM and just not release a true Steam Deck successor at some point based on x86. Valve is kinda making history with not making direct successors with the Valve Index -> Steam Frame.