My question is, why? What does it matter whether the virus originated from a lab or from a wet market - it isn't any more dangerous if it came from a lab, nor does knowing the origin really help dealing with this crisis at all.
It is certainly interesting to know where it did originate, and that knowledge could inform a debate on the future of (respectively) wet markets and animal husbandry practices, or BSL facilities, but these don't strike me as particularly emotionally charged topics, and in any case the posts I'm referring to don't mention these debates...
Anybody care to explain why you would respond so strongly to claims of lab origin?
In my "bat-shit insane" worldview, wars (including recent ones such as Syria, Iraq, Afghanistan, Libya) are fought for power and control over resources and global policies. They are not fought for the reasons given such as deposing dictators because they are dictators.
So in this "insane" worldview, the activities of some states take on a less altruistic character and more a brutal practicality. In this worldview, the operating paradigm is not essentially civil. It is "might makes right".
Now if you go further and put the deployment of nuclear weapons into that context, you will have an even more "extreme" worldview.
So in this paradigm, China may, like other countries before it, seek to improve it's access to resources and general power. And like other countries before it, it would be operating in the "brutally practical" paradigm.
So if one was brave and "crazy" then one could speculate that the Covid-19 event may have been the Hiroshima of the bioweapon age. And even if it wasn't intentional, it could be said to serve that purpose.
Even "crazy" people hope that isn't truly part of the paradigm now. But some of the braver "crazies" might still be able to admit some slight possibility.