Wrong! At SWA they get paid extra for every minute that they over block starting at 5 minutes past block time. Also go arounds are encouraged. If not configured, on speed, and stabilized at 1000 ft then the PM is supposed to tell the PF to go around. IF LGA was pilot error then it was due to the crew not following procedures. However the full NTSB report is not even close to being out so the exact cause is unknown at this time.
Incorrect. They're paid by the trip which is a flat rate. Delays mean they dilute their efficiency and pay. They're incentivized to get from block to block quickly which is why they're always in a hurry.
As for their 1000' gate - if they went around every time they were unstable, they'd be late more often than on time.
Would you like me to pull my references directly from their contract?