Read the review and thought it looked like the kind of thing that I like, but then saw that it doesn't have SteamDeck compatibility. Sorry, but if you're only going to target Windows then you're not seeing my money.
OP here: I played it on Steam Deck for 20 hours, it was fine. No performance issues; a very small minority of art was hard to see because it was small, but using the Steam Deck's built-in magnifier tool (Steam + L1) was easy enough.