Saying that corona is a bioweapon is a kind of conspiracy theory. If Coronavirus is a weapon for killing people, it's totally failure.
By that measure so is the 5.56 NATO round. As a matter of fact, included in the list of properties of that round was that it often maimed rather than killed and thus increased the strain on the enemy who had to allocate more resources to deal with the wounded person.
My point is that most people have an extremely simplified understanding of strategy and tactics and thus what makes a good weapon. Or even what a 'weapon' is for that matter. Non-lethal biological weapons can be a much better tool than lethal ones or nukes.
It might be possible to collapse a country like China with non-lethal biological weapons. The trick is to get the Chinese people to do the heavy lifting work of ousting the CCP, and it very well may work out that way (no matter what actually happened with SARS++ which is still a big mystery.)
It's increasingly clear that 2019 nCoV is a lab created thing. (Less clear, to me, is whether this is actually the main thing killing people...if people are actually even dying...or just some bacteriaphage along for the ride, plays a small part with it's AIDS component, or is just there for the purpose of confusing people.) I could see this turning into a giant game of blind-mans-buff as various countries react to perceived attacks in an every increasing spiral of vengeance.
Maybe that is the idea? When the dust settles it will be a 'new world'...and it will need new leaders.