Management have allowed the CC unions to run the roost over many many years, I cannot see the CC unions changing all of sudden, just looks like they are trying to maintain T+Cs for their members, and non members.
From what I read, CC appear to be getting hit the hardest by far, yes I know they have high T+Cs, but other sections appear to getting treated much better with little changes to their deals.
Good luck to all the CC.