Just to be clear I'm not claiming the story is true, but it does seem to be worth investigating.
I believe China is capable of letting a virus out in the wild, their lack of precise standards & quality in manufacturing is ingrained in their culture, unlike Japan or Korea. I also believe China is capable of this scale of cover up...but that doesn't mean this story is true.
I believe this will be one of the items that is investigated in the upcoming WHO inquiry.
Honestly if this story was true, anyone in China that could prove it is likely dead or imprisoned already.
Edit..
It's also a strange coincidence that there is a Lab in Wuhan, near that particular wet market that just happens to research Corona Viruses.