So I’ll answer the other way, and explain Bazzite’s advantages. Mainly it comes down to the fact that installing system packages is easier, and Bazzite comes with most of the useful ones pre-installed. For example:

• podman installed by default, so you can easily bring up containers for automation tasks or background services
• Sunshine can be easily installed, so you can stream games to another device like a tablet
• you can add more packages using rpm-ostree, or brew, or distrobox
• other various tools like support for joysticks and controllers and custom key mappings, installed by default

Basically, Bazzite gives you the reliability of SteamOS, because it’s also immutable, and well tested on the Deck. But Bazzite gives you the power and customizability of a full desktop PC, letting you mod it more heavily and use it for more than just gaming.