If I was near a bank robbery at the time of occurrence, it does not count as evidence that I did it. Not even if I have a history of robbing banks. It must be combined with other, stronger evidence (I was inside the bank, my fingerprints were there, I was caught on camera) to build a case.
There is only circumstancial evidence for it, but it is reasonable to suspect COVID-19 is the result of a researcher getting infected, not noticing, and introducing the virus to the human population. There is no evidence for, and it is very unreasonable to believe it was created in a lab.
(I'm only commenting on the words, I don't think I care where it came from at this point, not sure I could ever really believe it, whatever was concluded. Unless perhaps a bunch of countries/labs agreed, including the blamed one if applicable.)
The Russian agents videoed wandering about with bottles of poison are evidence of another mechanism of introduction. Perhaps the presence of a market full of various wild animals known to carry coronavirus's is also worth considering.
The lab in Wuhan was studying Coronaviruses because of the threat they potentially posed to humans, and because the nearby bat populations were know to carry them.
Saying that the existence of a lab studying novel viruses in their natural habitat is evidence that I can from a lab, is like saying the existence of fire stations in a cities is evidence that fire fighters start fires.
If it wasn’t made in the lab, then it was already naturally occurring. Which means it didn’t need to escape anything, on account of it existing in the wild before it ever got near a lab.
We don’t imprison people for crimes on the basis we couldn’t find any strong evidence, thus what ever shitty “evidence” we did find must be an acceptable basis for punishment.
> It must be combined with other, stronger evidence ...
This sounds like you agree. It's just weak evidence, and that's for darn sure.
The comment mentioning Bayes Theorem has the right idea. Your priors are exceptionally different from my own, so we do not see this the same way and maybe never will.