There's a bigger disadvantage of redundantly specifying the --output directory: one loses the flexibility of using 'Same as source' output directory, as specified in the profile, which is extremely useful when converting, for instance, multiple albums, each album in a separate directory: specifying --output would bundle all converted files to a single directory, mixing files from different albums.
There's a bigger disadvantage of redundantly specifying the --output directory: one loses the flexibility of using 'Same as source' output directory, as specified in the profile, which is extremely useful when converting, for instance, multiple albums, each album in a separate directory: specifying --output would bundle all converted files to a single directory, mixing files from different albums.