Ts & Cs have not been offered to anybody in Thomas Cook, so they cannot be known to be worse than the Hajj. Your informant has misled you. There has been an invitation to express interest which has, for the most, been ignored. This is because the company has not yet consulted BALPA, which it is obliged to do and may yet.
That said more than is required have expressed an interest.
There has, as yet, been no invitation to bid for the posts.
I was advising you that you had learned a little, a little is a dangerous thing especially when it bolsters your own opinion. There is much more about this that you don't know, nor should it concern you, it is a Thomas Cook matter, not Air Tanker nor anything to do with PFI.