You really don’t have to. It’s a theory anyone who knows anything about the science won’t take seriously. It just gained traction because some Chinese media claimed it was a possibility after the Wuhan lab leak theory was getting talked up in western media. That’s why hexbears latched onto it so much. However, in a weirdly new way to express western chauvinism, many hexbears just ignore the Chinese scientists who did the hard work of helping to identify the likely origins of Covid. They mean well and rightfully question the US state department story but it’s painfully frustrating all the same.