Hmm. Its not redundant because the acoustid fingerprints are used for matching songs to Musicbrainz and if you create fingerprints for all your songs before you match then this could give you better match than if you just create fingerprints for some of the songs as part of the matching process. Having said that its not going to make much difference at the moment because acoustid doesnt currently provide a way to look up matching releaseids for a list of fingerprints, fingerprints can only be looked up one at a time so the matching algorithm just uses the first and last song at the moment, and only checks every song if it fails to find a match to a group of releases.
I actually meant to remove the generation of fingerprints from the submission task , which is used once you have matched your songs but actually looks like it is useful for it to remain as it is you get fingerprints created without having to think about it.
So in summary maybe it is a little redundant at the moment but Acoustid is brand new so will be a few tweaks to how it is used in the next few releases of Jaikoz.