That's not what I'm saying - Where did I say it must be true? I'm saying "We cannot conclusively say it's wrong, thus it's not in the same category as the moon

That's not what I'm saying - Where did I say it must be true? I'm saying "We cannot conclusively say it's wrong, thus it's not in the same category as the moon landing". In reality nobody knows the origin for certain, but IMO you seem to fall for the fallacy you are describing but with the opposite premise - i.e. "We cannot conclusively say that the lab leak theory is right or wrong, thus it cannot possibly be a lab leak".