It is the version that ships with RetroArch so it got all the features of that.
But it is based on an older version of Citra so there no hotkey support and the performance is not as good.
But it is also the only version we can ship.
The Ponzu feature can be used to load legacy versions of removed emulators without support.
We have pressed the publish button on Flathub (Discover) so it should show up within a few hours :)
Everyone is removing Yuzu & Citra as they are both made by the same company, shared code and team thus affected by lawsuit.
EmuDeck is also removing both as far as we understand.
ES-DE might also remove support for it, so it can not just find the files.
We are looking into alternatives, I will look into why the link above broke.
Jorge, Kyle and the others over at ublue is doing a great job with their Fedora spins.
I run Bazzite on all my computers and if you got a full AMD system you can even get full gamemode running by installing the deck image. This in turn give you the best controller experience for games, as Desktop Steam got several issues with Steam Input valve have not fixed yet.
But not all credit should go to them for this but also ChimeraOS team, Nobara and others that are constantly working on an improved gaming experience on Linux.
When developing RetroDECK Steam Input profiles I mainly use the Steam Deck with SteamOS and Bazzite on my desktop to test them.