I don't see an "almost"

Still. There is a difference between saying something hasn't been ruled out and saying that it may be true. To me, "may be true" implies a decent (> 10% chance) that it is true. My impression is that most experts do not think it's true. They just don't have enough evidence to definitively rule it out.

We are talking about a one-off event that happened in a totalitarian country with a huge penchant for purging undesirable information.

Even experts are on a shaky ground when almost all primary information sources are controlled by a non-cooperative party. The only thing concerning the origin of the epidemics that is beyond reasonable doubt is the genetic sequence of the virus. We do not even know for sure who the first covid-19 patient really was and when.

Of course it is hard to speak with confidence in such a situation.

Really? Just yesterday: "The WHO's Chief Says It Was Premature To Rule Out A Lab Leak As The Pandemic's Origin."

https://www.npr.org/2021/07/15/1016436749/who-chief-wuhan-la...

That headline is literally my point.

"It Was Premature To Rule Out A Lab Leak" === We do not have enough evidence to definitively rule it out.