The coverup with a man who authorized the funding for the lab being the only American on the WHO scientific panel investigating the lab was the smoking gun for me.
It really doesn't matter if it came from the lab or from the environment. The fact that they covered it up shows the lab was breaking protocols and they believed it could have been the lab that released the virus.
The lab needs to be shut down and similar labs shut as well to institute a major overhaul of the system.