To show my point, even if we aggressively investigate the source and discover it did not originate in a lab, nobody would then argue that it's alright to lower security on such biolabs.
Knowing whether it was a lab leak or zoonotic would be a massive hint in the direction to invest in. N=1, but it's a big 1 that would have massive public support.
So we should be aggressively researching all the known possible future causes, not wasting time trying to figure out what the exact cause this time was.
>Knowing whether it was a lab leak or zoonotic would be a massive hint in the direction to invest
We know both are possible causes, investing in just the one that caused this leaves us open to the other.