Speaking as someone who knows. Who knows! And right now can prove he’s Covid negative, unlike you ordinary mortals.
No, I can’t exactly recall the US bio weapon post GR refers to. I’m willing to bet though that it’s sourcing is about as credible as a flat earth. You would doubtless need to be a true believer, with a passionate desire to do so. Or of course a useful idiot.
You don’t hear a lot about it but the Chinese have a quite large and sophisticated disinformation branch of the PLA. Better than the Russians and that’s saying something, Certainly one of its early efforts was a story about the virus being released during a US army visit to Wuhan around that time. Distract/divert/delay. Eagerly lapped up on social media but a load of total bollocks. You could call it - more anti-US “theatrics”.