Exactly. Once Jones leaves, Aspinall is back to defending that belt against cans like Tai Tuivasa and Derrick Lewis on UFC fight nightsWhat Jones has figured out, belt is meaningless unless the person holding it matters.
Most can't tell you who has belts right now, no one cares. If Jones vacates the heavyweight belt, Aspinall fights some other bum to unify it, no one cares. It gets passed around, no one cares.
Stipe had the belt all those years, no one cared. Most can't even really tell you who he was fighting to keep it. Maybe DC and Francis they can tell you about...maybe.
Jones realizes he's the last of a dying breed and has all the leverage. We care because he's involved, otherwise, absolutely no one would care about what Tom Aspinall is doing.