Like so much of the propoganda from UNITE it is not entirely factually correct.
It says that all BA employees are facing redundancy notices and being offered new contracts. That is correct for some departments. As an example the pilots, while facing difficult negotiations are not being threatened with redundancy and new contracts.
There was a letter sent to the various BA unions. Much of each letter was identical but the part threatening redundancy and re-employment on new contracts should negotiations fail was not universal.
UNITE's tactics are, as usual, blunt and ineffective. Without question BA is taking advantage of the crisis to achieve industrial aims but whatever your views negotiation is the way forward. UNITE's tactics are reminiscent of the disastrously conducted cabin crew strike in 2010.