Because the BBC are once again platforming, legitimising and boosting far-right adjacent commentators who specialise in bigotry-fuelled grift and discourse into mainstream politics via Question Time.
This is the whole purpose of GB News: Not to get viewers or to make money in itself, but to launder these people and opinions onto the mainstream broadcasters as talking heads and setters of the dominant narrative.
And the BBC are happily going along with it.
(also, be aware of quoting Hln Lws on here as a way of backing up your argument - DiSers are a Trans*-friendly group)