As a fish user i relate to this

Because we fish users don’t need to write a new function for this, because we already have an option on alias for it?

In man alias in fish:

         -s or --save
          Saves the function created by the alias into your fish configuration directory using funcsave.

In man alias in bash:

OPTIONS

  None.

(PS, though, still perhaps handy, if not liking how alias -s saves your aliases.)