The link you provided does discuss the probability of the virus accidentally leaking from a laboratory, however the reasons provided does not really provide much facts, seemingly more speculation (except for facts regarding who we think is patient zero):
"The WIV, and Dr. Zhengli-Li Shi’s lab group, are extremely well-respected in the virology community. As well respected as many US scientists.
● All the WIV’s sampling of bats and the genomes that they find in bats are publicly available information. Why isn’t SARS-CoV-2 on any of those lists? We would know.
● This doesn’t look anything like any laboratory accident that we’ve seen before.
● The evidence we have points to Patient Zero being nowhere near the City of Wuhan." (https://drive.google.com/file/d/1kAHSEx9-eIyVIahczH8itHaUm9j...)