The exchange reads like textbook example of broadbrushing. Somebody raised concerns about negative long term effects of censorship, your reply accused them personally of believing that 'Covid-19 is caused by 5-g towers'. They never even mentioned Covid19 or 5G.
> Are you saying that the truth is "Covid-19 is caused by 5-g towers"?
vs. a reformulation, to capture your stated intent:
> Are you saying that we should allow the circulation of obviously wrong ideas like "Covid-19 is caused by 5-g towers"?
Just because some of the 'Covid19 is caused by 5G towers' crowd also believes censorship is a bad idea, we can't infer that everyone / a majority of people that believe censorship is a bad idea are also believing 'Covid19 is caused by 5G towers'. Alas, our brains are very prone to this kind of elementary logic error, which makes the broadbrushing mechanism so powerful.