Yeah so I've gotta be honest with you, the memory of this seems to fade pretty quickly.
I've had multiple captains tell me I was a fool for coming to work at Juicy Juice Airways because if I had just hung out at my regional a little while longer DELTA would have called, and DELTA is the best airline ever and if we had DELTA'S contract life would be AMAZING.
They say this without realizing that for a guy in my position, American would likely provide the best seniority progression going forward.
These captains are also convinced that with enough PIC time you can get hired at DELTA, or UNITED, or AMERICAN, or do whatever you want because Juicy Juice Airways is the worst airline since ever. But I know multiple LCA from my last gig who waited a long, long, long time to finally get a call, most of them with better qualifications than me. More importantly, they were unquestionably kinder people than I am, and I could never understand why they didn't have multiple job interviews lined up. A few of them got the call and were told no thanks by Delta, United, FedEx, or Southwest.
So you're right, when someone is working at an airline that has a topped out A320 captain pay scale that's within 2% of United's A320 captain rate, and is considering jumping ship just because they currently have to commute to work, it makes you wonder what's wrong with them. Worse, I'm pretty sure JetBlue and Alaska will merge one day, and that will result in a New York base as soon as that SLI is executed.
TL;DR, the long game is the only game, those who managed to Delta/United/American/Alaska/Southwest/JetBlue/Spirit/Frontier should have some appreciation for what they have, and if things suck now, they'll get better eventually.