Why are so many catalog apps using the beta/nightly builds

Trying to understand why truenas is making/forcing catalog apps to use beta/nightly repos instead of stable. I feel like using the catalog install button is meant to be the easy/newb route but pairing it with beta builds seems counterproductive.

-Newb at docker

Some repos don’t give good info on Stable / Beta / Alpha. Just see Emby stable train is back in beta