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What you seem to imply is that there are ‘facts’ and there are ‘alternative facts’, an expression that has been used by Trump or one of his team before. Of course in this current debate it has become fashionable for those who know nothing about science, to have an opinion and then to present it as ‘fact’ when it is nothing of the sort. To just give an example, some posters claim that the PCR test for SARS cov2 is worthless because of a high false positive rate. Neither of these assertions are ‘facts’ in fact they are completely wrong, The PCR combines a high sensitivity and specificity. So to give equal credence to someone that somebody without any knowledge making a statement is a debatable fact is a fallacy. Other examples abound in this controversy.
N_ did try to misinterpret and misrepresent some reports in the Guardian as has been pointed out before, so it was not even that he was presenting ‘alternative facts’ but was (deliberately) misinterpreting the report he spoke of. N- has been predicting famine and food shortages since the middle of last year consistently, and none has happened.
I do understand your misgivings about deplatforming, something that has now effectively been used to silence any criticism of a certain ME country, but I think limiting the spread of misinformation is different.