The trouble with projects like GBN that have "an agenda", particularly their original stated one, is that they are inevitably slanted in a particular direction. They impart aspects to their rivals which probaably only exist in their imagination and as a result end up being too self-consciously "different"
They started off catastrophically, and although they've got better their audience share appears to have plummeted from its original low levels. I cannot see it surviving in its current form.
It does a lot of mising news and opinion, with opinionated commentators adding their views to what they are reporting, which is a very American style and one I personally don't like.
Fundamentally, it might work if they can get the balance right and attract more diverse opinions, which in fairness I think they have tried to do, but I've just been watching a lady ranting about the government's Covid Plan B and casting doubts on the idea that the NHS is or has ever at any stage close to being "overwhelmed", something which I know for a fact HAS been the case, and she's not really being pulled up on it by the presenter.