It's clearly marketed for remote communities with little to no connecting infrastructure. Think Alaskan wilderness or Hawaiian island hopping. This isn't for getting from LA to Denver for skiing.
Even Ryanair turnarounds take like 30 minutes. A bit more than that and you can charge the plane comfortably. Fueling bigger planes is quite the ceremony.
Making the battery replaceable by heavy equipment would drop the turnaround time for these. The planes fly regular routes (mostly), and could store a few extra batteries at their regular destinations.
Odd added benefit: the potential ability to jettison a huge part of the weight in extreme emergencies to increase flying time by the backup ICE system.