They are doing this not the first time. They are extremely aggressive against any hypothesis about the lab origin of the pandemic - and yet it is increasingly becomes acceptable by the mainstream media (BBC News tried independently verify some claims, but had literaly obstacles (physical) on their way,set by Chinese government). Racaniello (?) was big defender of GoF experimentaion on flu during 2012-2015 moratorium on this research; Osterholm AFAIR was against. TWIV are strange people, it turns out. UCSF podcasts are way more professional.