Roblox was broken on Deck and linux by the addition of a new anti-cheat. The way the Sober app gets around the anti-cheat is by instead running the android app. This apparently has some significant performance improvements over the usual PC app as well, with people reporting up to twice the performance on the same hardware.
I know people are pretty dismissive of roblox (myself included), but it’s hugely popular and it’s always good to have the option.
It can be very fun with friends, so it’s cool to not need to dualboot to be able to play