The psychological image of "First Fleet", is the best, the winners, number one, as that is what the word First means to people. What people associate with the word second, is of something not quite as good, a loser
It was BASSA's inability to negotiate that led ultimately to MF being introduced. Those crew who chose to join BA as MF crew do so because
1) They need to work, and
2) There are no better terms available, BA will never again employ crew on the 'legacy' crew terms.
Now the crew who have lost nothing turn their hatred on those who have had to accept reduced terms.
Charming. As Len said:
Over the past 18 months I have witnessed your dignity
Playground spite more like.