Base game, no. The Adrenaline Pack Pt 1 DLC has rallycross tracks, a few dirt circuits, and a few classes of cars for these.
HER0
Personally, the main thing keeping me on Xorg is support for global keybinds. Plasma and GNOME both have support for the XDG portal which mostly addresses this, but apps still needs to adopt it. Plasma also has a workaround for global keybindings, but I don't use that. Sway doesn't have any good solutions for this last time I checked.
Overall, I like Wayland more but I need support for global keybindings for at least a couple programs I regularly use.
Arma is an interesting example. I'd say that it is only an open world game in some scenarios, and often times is a linear game that happens to have a big map and sandbox.
In any case, I'd agree that it having a large world with many possibilities is important for the gameplay and ability to mod/create content across the maps.
Recent conversations with friends had me playing Star Fox 64 earlier last week, which has been very nostalgic.
Over the weekend, I was surprised to have a couple friends who I thought would never want to play an Arma title show interest in playing Arma Reforger with a group of friends I play with. I got to play a bunch with one of those newly-interested friends yesterday, and was super pleased that she enjoyed it.
The Steam Deck compatibility notes for the game specifically say that it isn't good at handling multiple controllers:
I think it is likely that this problem comes from the game, not a problem with streaming sending the inputs. You can try testing this in another game with more flexible controller support to narrow it down.