Important notes from the article fro those playing on PC:

Larian does not provide support for the Linux platform. The Steam Deck Native build is only supported on Steam Deck.

Due to the way Valve’s Deck Verified system works with it also giving the same default for Desktop Linux, you likely need to now manually force Proton on it - otherwise you’ll see it as a totally empty download. I’ve added a bug report for Valve on this one, hopefully it can be sorted.