No, people are allowed to speculate and throw out ideas they have without needing some “expert” or paper to back up what they are saying. The mistake is treating such as if it’s a fact. Sure, there’s always going to be idiots out there that will take ideas like that and run with them, but I reject the idea that we should censor those speculations and random thoughts because idiots might believe them.

The real problem are the con artists who work those idiots up into a frenzy of fear and distrust by deliberately presenting shit they can’t back up as a fact and threat to drive donations or sell snake oil to “protect” from it.

And I’d say even shit like what you said does more harm than good because it can drive those who enjoy harmless speculation but lack the confidence to push back towards the fringes because they think the mainstream wants to tell them how to think.