I don't know the specific company, but in a company I flew for I remember our No. 1 telling us that her 9 year old son burst into tears when he saw Mummy dressed in her uniform at 0600 on Christmas Day, because he knew that once again, Mummy would not be there on the big day.
I don't know why air crews put up with flying over Christmas, and we never got any compensation at all for doing so, yet in other industries you would be talking double or triple pay for Christmas Eve, Christmas Day, and Boxing day, ditto for New Year. It is not essential to fly on those days. Do the CEOs and managers work over Christmas.......?
My pilot colleagues whom I tried to speak to about this said "well it's what you signed up for", so I gave up since there was clearly no appetite for doing anything about it.
Good on these crews, I wish them well.