It sure is politicized from all possible sides. But we should be open to investigating the cause, so that we can create policies that can prevent future disasters.

Policies already exist but impossible to force agreement or compliance. Suppose clear evidence comes out this was a lab-grown virus, released either accidentally or maliciously. Then what? What agency will punish China? How would that knowledge affect global response to the virus?

I imagine every nation with sufficient capabilities has secret biowarfare research going on — no clean hands. Pointing fingers and speeches in the UN won’t change that.