The key element in this article that I have not seen elsewhere is that variants A and B both originated in the Wuhan market, separately. (In fact, they found B first, but a twist in data processing gave the other variant the "A" name as if it was first.) Anyway, they show two independent strains developed in the same place, as the same time, in the same corner of the market. So the situation was so ripe for cross-contamination between species that COVID not only spawned there, but did so twice, in a short amount of time, and went different directions. (A and B are apparently completely different variants of the same base virus, and one is not a progressive mutation of the other. As far as I can discern with my degree in Fashion Design.) That's the only bit of new information I saw in this article, and I found it interesting.
Unfortunately, one of the really frustrating things is that they obfuscated, lied and misdirected for so long that you have no idea what's true anymore. If they had this evidence in January of 2020, why are we learning it now? Fake data are a Chinese specialty (well documented in the literature), so it's not as if it's a stretch to think they could make a bunch of shit up and feed it to credulous Western scientists (thought it was really curious that there were no Chinese scientists on the author list here...seems like that's by design since only the Chinese have access to the original data). It would be hard to fake these data, but not impossible. A few months back there was an article on here (hell, maybe I even posted it) about how Xi chose obfuscation, because whatever the origin, it looks bad for his policies. So maybe these guys finally cracked the case. But the fact that it's taken 2.5 years to get these data into the world only makes it look more suspicious.
It was a foregone conclusion that the Sverdlovsk anthrax leak was wet market collateral damage until Ken Alibek defected and named the researcher who forgot to put the filters back in. Only took 20 years. We'll have a better idea what happened after the CCP falls, not before.