CIA now seem to think this is the most likely source.
I've never been too exercised on where it came from. More interested in the damage it did (and continues to do) to our society. But this does demonstrate that the media and individuals should at least be more open minded and curious on these things, no?
Am surprised it's not a bigger story too, given the pandemic is the story of the century thus far.
https://www.bbc.com/news/articles/cd9qjjj4zy5o