Earlier quoted context omitted.
Southwest is literally the poster child of low cost carriers. They started the whole business model, which consists of a few things: * they operate literally one type of aircraft, and therefore only have to train their crew once, keep the specific set of parts, etc. * they optimize the hell out of making sure their planes are in use carrying paying passengers for the maximum amount of time * they fly a vast network o…
How operating one type of plane makes recovering from disruption harder? I'd expect it to make it easier - you can replace any crew with any other crew, and any plane with any other plane. Same with secondary airports - I am not sure how it makes recovery harder. Distributed systems are usually more robust against disruption that centralized ones - if you can't fly in an out of the hub, then all your flights in that…
Southwest had plenty of older 737s as well, but the new MAX planes both fly farther and have more seats, so while the grounding was in effect Southwest was essentially paying to keep the things on the ground while scrambling to reconfigure their flight network, and it affected them the most.