I’ve only been fully on Linux for about 4-5 months, but am yet to experience any issues on Fedora KDE with Wayland. Previously while I was distrohopping I was having a bit of a rough time but since settling on Fedora and with Plasma 6 it has been smooth sailing.
I’m using an AMD 5700X/B550m and RX 6700 XT. Also with two mismatched 1440p displays (different refresh rates).
Yes, both the Ally and the Go are sold in Australia. However it’s also quite easy to order a “grey import” Steam Deck from Amazon, which is what I did. I’m guessing the sheer number of Steam Decks that have been sold into Australia that way are factoring into Valve’s decision, because anecdotally among my peers the Steam Decks owned outnumber the Allys 4:1. Pretty impressive for a device not officially sold here.