Earlier quoted context omitted.
There’s only a spec of difference. I don’t know anyone suggesting that the lab leak was of a natural origin. The theory is that the lab created the virus and it leaked.
I think there's a genuine spectrum between man-made bio-weapon (not very believable IMO), through gain of function research (I've read enough that - if true - the RNA evidence suggests that it probably wasn't this), through to leak from animal studies. Gain of function, if it isn't ruled out by RNA or other approaches, isn't quite man-made and is at least somewhat plausible. Gain of function research on the flu is (a…
I'm unaware of any reputable experts who are willing to assert that manipulation via, eg, serial passaging, can be ruled out. The closest you'll get is assertions that a natural zoonotic origin is, in their estimation, more likely.
See, eg, https://nymag.com/intelligencer/article/coronavirus-lab-esca... and https://nicholaswade.medium.com/origin-of-covid-following-th....