I agree with everyone - I'd much rather see the training footage and stresses and strains of learning something. For example, I'd have rather seen Anthony discuss with a doctor what he could and couldn't do with his arm and have some honesty about the extent of his injuries than see him pretend to take Oti boxing.
But my perception, I don't think I really back it up in any way, is that they changed them because they were constantly being accused of bias, of giving one person a VT that had nice things like their children visiting the training, and someone else shown crying or shouting at their partner. There were some quite controversial training footage films, particularly with James and Brendan. They might have got fed up of having them analysed like that and decided to go for treating everyone equally idiotically. Or I think other people have suggested that they just can't pay for filming teams to be with everyone as much as they used to, so they only have tiny bits of not necessarily very interesting training, and that sounds really possible as well.
Whatever the reason, it's a shame because I think when you saw how hard it was you had more respect for all of them.