Unfortunately it is all about who gets what.
The company isn't going to pay to extend A scale and provide renumeration to those affected by an increase in age 65 which conveniently will probably work out to be everyone who joined after Jan 01 2000.
Command is now minimum 12 years, the days of 8 or 9 years to command finished this month with ASL taking all pax commands from here on in for quite some time. Add on RA65 and it goes to 17 or 18, look at the market realistically with downturns as well and plenty will see 18-20 yrs to command at Cathay.
Do the numbers. Bloke A joined in 1990, Bloke B joined in 2000, both 30 yrs old at DOJ. Both with 1500 Boeing narrowbody time. Bloke A got command at 35, Bloke B at 49.
Both go to 65, on current conditions, one will retire with well under a third of what the other will retire with.
That's life, the union supports Bloke A over Bloke B. There are good times and bad times to be in Cathay and for anyone who joined as S/O in 2000 or later, hard luck.
Live with it.