1) If covid _did_ come out of lab - I'm emphatically not saying that I believe that it did - I have pretty high confidence in the ability of the any government to cover it up.
2) There is some class of people who will accept whatever 'evidence' of a lab leak as completely convincing for a variety of reasons (conspiracy minded thinking, anti-chinese sentiments, etc)
3) It seems impossible to strongly prove that the virus emerged naturally (we can't observe the case zero event again), _especially_ to the crowd mentioned in 2).
Given these 3 statements, it's really hard for me to see _any_ value in investigating this any further. It just seems like it'd just feed fuel to group 2), which is not something that I think would be particularly good for anyone in the long run.