I think Brian is right in a way the new audience now would find it boring.
BB2 was a riveting series for me, due to the mix of HMs and Brian although not perfect (Who is!) was hilarious "Hold me Bubble!" The tasks were class and we had LF!
I think C5 did Brian a favour in sacking him, he is a more off the cuff sort of chap and very naturally funny.
And if anyone asks, yes I have stopped watching BB on C5 I think I'm like a lot of forum members keep coming back here, in the vain hope that BB might "pick up" again also I like to chat about past C4 series, although not perfect especially in the later years, they were certainly streets ahead of the utter mess we have now.
I can't think of one memorable moment from any of the series on C5 one or two things have made me laugh, but it just seems to be nasty and depressing.