That PhD virologist comes off as not credible at all, as part of their response is to deny the entire possibility of lab leaks
in general. Their argument is that industrial accidents are simply caused by incompetence or lack of funding, and WIV is well-funded and run by competent people: therefore, bad things
simply cannot happen. Their attitude is fundamentally unserious.
https://old.reddit.com/r/science/comments/gk6y95/covid19_did... (4.1)
>"I say this as someone who has been to these conferences, who knows many scientists who work on dangerous viruses, and work in facilities like the Wuhan Institute of Virology. We virologists know this group, we know about the WIV, and the WIV facilities do not frighten us. We do not view WIV as “unsound” or “risky” or “dangerous” or “incompetent” (76)."
>"We’re not worried about BSL4 labs that are well-equipped, well-funded, etc. (like the WIV is)."
>[...] "We biosecurity people are also very concerned about new BSL4 labs being built in developing countries in South America and Africa (99). But, you know what’s interesting? The WIV and its researchers are part of these committees that get together and discuss what to do about these challenges. They are part of the people who are helping to decide what is “safe enough” for a BSL4 lab! We here in the US agree with the WIV about what “safe” means (76). And the biggest reason for that is that we here in the United States helped train WIV researchers. We are the ones who taught them how to work with these dangerous viruses (76,100,101)."
(There are no buffer overflows in this C code: I'm very competent and experienced and how dare you).