Do you really have 10000 hours playing PZ on the deck or just overall playing the game? I mean, the deck came out two years ago, seems highly unlikely you put all those hours on the deck specifically.
I'm exaggerating for comedic effect. I have ~300 hours in PZ all on the Steam Deck. Not the game I was expecting to play on it but it works pretty well.
It's still a little clunky with a controller but the touch screen really helps to fill in the gaps. I also map the paddle buttons to zoom in and out since that's really important.
It wouldn't take much to make it much more controller friendly. Maybe another ten years of development time. 😀
I've also played a fair bit of it on my Deck. I'd say it plays pretty nicely, though using the console based controls just felt so unintuituve to me so I'm just using the regular PC controls + some custom bindings.
If you only sleep 8 hours a day, you could get 10,000 hours in a year. That doesn't account for working, bathing, or other tasks that may interfere with Precious.