There is value in the gaming specific distros since they already include all the stuff like controller drivers. I installed Bazzite on my desktop which I have plugged in to the TV and it's been every bit as seamless as the steamdeck. It boots up direct in to steam big picture mode and I can do everything with my xbox controller.

Bazzite is an immutible os which is absolutely the future of linux. Your install will never break on updates since rather than a normal update migration process, it simply boots the next version of the OS image, which if it doesn't work will just revert back to the old image where you can wait for the bug to be fixed to update again.