> understanding the underlying biology becomes more useful to address novel variants popping up in the wild (apart from other potential uses).

This is effectively not true in light of the mRNA platform, which negates the rest of your argument as well, because the existence of the mRNA platform is not contingent upon the origin.

Dangerous GoF was made excessively dangerous by the invention of the mRNA platform regardless of whether COVID itself even happened, never mind the specific origin of it.

Doing GoF research in major metropolitan areas is very obviously unacceptable and should have been considered such prior to COVID, and should be widely considered such after COVID. Again regardless of whether COVID itself came from WIV.

We already know everything we need to know about zoonotic possibilities which is that nature can produce pathogens orders of magnitude worse than COVID on any dimension.

If after learning that COVID was zoonotic, your conclusion is "guess it's okay to keep WIV and WIV-like labs in major cities doing the type of research they were doing," then you are simply insane.