We feel differently about this. Personally, I find all the evidence collected so far quite compelling. And I believe humanity has a responsibility to our children to investigate all worldwide pandemics to the fullest extent possible.
> Even if we did, it wouldn't change anything about what we ought to do
Whether or not it would change what we ought to do, it would absolutely change what we actually do. I think there would be broad public support for increased safety procedures at a minimum. The testimony I linked offers additional suggestions.
Your scenario of ending all GoF research might be on the table, or might not, but there is a broad range of less dramatic options available. Among them, locating GoF research labs away from densely populated metropolitan areas and international airports.