There were separate things going on which were flagged commonly: various conspiracy theories about bio-weapons or intentional leaks, Trumpian racism of the “king flu” persuasion, general evidence-free speculation that the Chinese government knew about it for a long period of time (claimed early cases as far back as the summer or fall of 2019), and discussing the possibility of a lab leak of a collected sample during analysis.

Sober discussions of the last case were fine: there was tons of that in the scientific literature and it was recognized as a likely scenario along with the wet markets since both are commonly discussed risks. If you came in hot, all hyped up on Fox News talking points, saying it was only as bad as the flu, or babbling about HCQ or Ivermectin, you’d get flagged since it was clearly not a scientific argument or contributing anything of value.