Earlier quoted context omitted.
> I refer to things like attaching counter opinions to opinions of people with high visibility for example That's what fact-checking is. It's widely heckled.
The problem with fact checking is the presumption of authority over the truth. I don't suggest fact checking, I suggest equal exposure to contesting ideas. I guess NASA tweets might receive pairs who claim that the Earth is not a globe :) That's OK, NASA can respond to these with equal visibility and if people are not convinced I guess NASA would need more convincing arguments.
Btw I'm not advocating for active suppression of ideas. I just understand if a particular company chooses to do it on their website. I'd do the same in their place. It's not their job to give everyone a voice.