Comment by distances

The key word was Linux build. There's now an official Linux version so that BG3 runs better on Steam Deck. Everyone else should keep using Proton to run it like they've done this far.

Which applies to all the games, basically. I nowadays make sure to select Proton before even running the game for the first time, in case it has a Linux build -- that will invariably be the buggier experience so want to avoid it.