I remember still when it was considered a conspiracy theory and we got downvoted here and banned on reddit for even implying the possibility. Unfortunately something similar is happening with AI x-risk right now.
We still have no strong evidence for lab leak from BSL4 lab in Wuhan, while we have some evidence (two early strains of SARS-CoV-2: A, then B; B was in Wuhan in December; where and when was parent of A and B?) that suggests start of epidemic outside of China in mid-September 2019. Russians start to delete videos about blast at their BSL4 lab "Vector" in Novosibirsk on Sep 16 2019[0], which suggests that this information may cause harm for them.
So, "Lab leak" theory may be right, while "lab leak from BSL4 lab in Wuhan" theory may be wrong.
[0]: https://web.archive.org/web/20200407175030/https://www.youtu...