Yes, the air tubs don’t have the problems the jetted tubs did. The jets don’t drain completely so dirty water got left in them. They’d have to fill the tub with a disenfecting solution in the water and run the jets between each guest. Air tubs push air through a tube that has a backflow valve to prevent water from getting in, and after the tub drains it automatically runs air through for a few minutes to dry the ends of the tubes.
I don’t know of any air tubs in the Disney resorts, though. Have you stayed at a resort that has them?