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.
Honestly, good take. I think Starfield is overhated. It definitely isn’t Bethesda’s best work, but it has its strengths. I just wish they had someone actually advocating for QoL and immersion, like letting you navigate more without the map in ships and masking the warp loading screen better.