One assumes from the tone of your message that you work for that part of Big Airlines where there seems to be simmering undercurrent of resentment among some cabin crew that they should have any communication with those crew members who are actually charged with flying the big hotel and are, therefore, primarily responsible for the safety of all on board.
The problem rarely arises in companies/flights where the crew is integrated and consider themselves one team. Any good captain is only too well aware of the pressures on his cabin crew.
Although this is a rumour site I would suggest the rumour you quote (even if genuine) seems intended merely to stir up a bit of aggro.
It is surely better to be looking to mend bridges than adding fuel to dying embers.