Also animal-to-human viruses usually go over two phases: first animal to human contagion is possible but human to human is hard, then human to human gets easier

Also animal-to-human viruses usually go over two phases: first animal to human contagion is possible but human to human is hard, then human to human gets easier as the virus evolves. If Covid-19 started in the wet market it went over the first phase very quickly. Part of fighting disinformation and conspiracy theories is also learning to distinguish when things are just lies (eg. sandy hook was an hoax) or truish but misused (eg. chemical waste in river does affect the sex of frogs). It is also important not o make a strawman of the opponent. For some people the "Lab Theory" is "The CCP was trying to exterminate the US but failed" for others it is "A researcher got bit by a bat in a lab". The former is paranoid, the latter is completely plausible. Overall there is good circumstantial evidence for both, and reasonable people can disagree.