I believe he's talking about the superdelegates (as a collective) not going against the candidate with the most pledged delegates nationally, e.g. when they transferred to Obama in 08.
I think they have the potential to serve one useful purpose, namely stopping a Trump like demagogue getting they nomination, but given the likelihood of that scenario occurring given the Dem demographics and the toxicity that they now possess to a large portion of potential Dem voters, they'll need at least substantially cutting down to a fraction of their current size. But I think that's of fractional importance compared to sorting out proper and fair primaries in all states.