The writer makes a devastating attack on mainstream media which always defends business-as-usual and the capitalist trajectory that is leading us over the cliffs of a nuclear conflagration and climate destabilization. This may be radical politics 101, but we can't ignore reality: most people are so habituated to corporate media and naively believe that it offers an accurate lens on reality. Thus I see the final paragraph as an understatement of the year:
...relying on journalists in the corporate media, not least the BBC, to exercise such responsibility is a forlorn hope. We should reject the elite media which exists to serve elite interests. Instead, we need to develop and support alternative means of informing and empowering the public in the vital struggle for climate protection, peace and equality. [emphasis added]