He's talking about virological and making up threads that never existed. There was a lot of discussion in the early days about how it seemed possible it was synthetic based on the binding site affinity but as scientists do, they researched the literature, conferred with their colleagues and almost all came around to the virus arising via natural origin.

The early threads are super interesting in an anthropological sense:

https://virological.org/t/tackling-rumors-of-a-suspicious-or...