We just swap who flies each leg, I’ll do one, the other pilot will do the next, and so on. Seniority really doesn’t play into it at all. Usually we don’t leave the flight deck to deal with emergencies, we rely on the cabin crew for that.

I’m not sure I’d jump straight to “dumbass”. Orlando is a giant concrete jungle where basically everything looks the same. I can definitely see how a mistake could be made, however there is inevitably going to be some other factors that led to it. Maybe fatigue, maybe distractions, maybe shitty pilots, but we don’t really know yet.