But almost all classes use their aether in one way or another. Machinist kind of channels it into their turrets. MNK is a parallel to RDM utilizing its own mana in its spells, as both arts developed at similar times in a similar location, after White and Black magics drawing from outside aether brought about a calamity. It's not like DRGs just generate their skills out of thin air. WARs use their Inner Beast to boost their abilities, and a case can be made for SAM, too.
NIN and BRD are the peculiar exceptions here.

Also, do you have a source for that interview? Because I really don't think they'd let any job really be without resource. At worst they'll redo the work gauges and use that