I do think that those facts should be out in the open It should help to keep some gullible, but well-intentioned people from falling for the malicious hoaxes.

Except that there is nothing wrong with positing a conspiracy theory and investigating it seeking evidence for or against it.
The problem is when people seize on a false conspiracy and believe it and propagate it without evidence.

Silencing conspiracy theories and theorists by criminalizing speech and idea immediately begs the quest who is to decide what constitutes a criminal conspiracy theory and a legitimate theory about a criminal conspiracy