I wouldn’t be surprised if this had something to do with the impending Microsoft buyout, seeing as they’ve been putting all their PC games on Steam for a while. That being said, I also wouldn’t be surprised if Microsoft starts moving away from both Steam and Battle.net once the deal closes in favor of the Xbox launcher now that they have a ton of potential exclusives for it.
You still can’t get Rocket League on Steam on an account that didn’t already have the game bought before it was F2P. Is this the case for Fall Guys, or did they go further and stop updating the Steam version?