Plasma 6 is currently in beta, so it really isn’t meant to be used for anything other than testing. I have it installed on arch, and honestly it’s good enough for my use with wayland, but you will definitely will run into issues. I also use Nvidia, though, so I’d probably have more issues than you will.
Overall, I only recommend it right now if you can roll back or if it isn’t that big of a deal if your install breaks.
The desktop app is called “EA App” not “EA Play” which is where the confusion is coming from. “EA Play” is the game subscription service that’s like gamepass.