Sony is going to have to invent a new "shittier than SD and ten times as expensive" memory card format first.
The Vita already proved how serious Sony is about the handheld market. "Someday, we're going to make a system that is ten times as powerful as the Steam Deck and runs for a week on a single charge". The only purpose of making such a nothingburger announcement is to try to Osbourne Effect the rest of the handheld market.
The Steam Deck's controller is usable without Steam running, except for that long, looong pause when Steam has taken over the controller but isn't doing anything about it yet.
I wish that Steam would not put the mouse buttons on the triggers, just leave them on the trackpad-click. And put "high res trackpad scrolling" on the left pad. But you can't have everything.