Not looking for 100% consensus but it seems that we're barely just at majority consensus for the idea of anthropomorphic climate change and definitely not a majority consensus when it comes to potential solutions.
There is a parallel here with the paradox of tolerance, in that allowing equal free speech is definitely not an effective & consistent way of reaching the proper & correct consensus. Free speech is too often an academic argument used to justify our inhumanity.
For many people free speech seems to mean equal airtime & consideration for opposition minority & fringe ideas. But when the majority consensus of experts in a scientific field say one thing, providing equal public airtime to the fringe opposition is not accurate nor is it good education. Opposing ideas circulate within expert circles and it is there that they should be reviewed, not presented to the public as equal worth to the majority of other evidence.
I think the articles main position is that if facebook says that it is committed to climate action, then it needs to enforce its own policies around that, which means stopping misinformation & disinformation that does not align with the majority consensus of experts. To me that's an uncontroversial position.
However I have no expectation that facebook has the capabilities needed to ever fully & correctly enforce its policies and to expect it to do so is unrealistic wishful thinking. Unfortunately.