Well if you want a guess I'd say it means that at some point in the future they can, in an article, that there is "broad support" for something by making the claim "for example based on commentary X% of our readers agree that Y should happen".
Or they are trying to leverage the human instinct to think and act like those around them... if you don't see the dissenting opinion you are less likely to think it is normal  and hold it yourself.