I've had a lot of weird issues with my early model Steam Deck from 2022.
I'd be interested in knowing how these later devices do in basic usability issues like will the device freeze for 30 minutes if booted when your internet is down but your network is up and it can't confirm your Steam credentials on startup.
Will switching inputs on an HDTV result in the dock needing to be disconnected and reconnected before you get a video signal? Etc.