As always with conspiracy theories they take a nugget of truth and spin out all the details themselves. With covid the nugget is that it did come from a lab and that fact was obscured. So that coverup piques their conspiracy interest. But the real truth is just that a leak from a lab is embarrassing and China DOES NOT abide embarrassment on the world stage. So when it got out they initially tried to hide that and contain it, then when that failed they put out the ‘wet market’ lie to make it seem like a natural zoonosis and not their fault. They paid their American influencers to repeat that and discourage lab-leak talk. The same propaganda crap they do every single day to make them look better. That’s it. Yes, they’re wrong for lying and playing coverup. But it isn’t some vast conspiracy involving the vaccine manufacturers or intentional virus design and release. Just a shady world power that specializes in propaganda doing its thing to cover its ass.