Normally I don't bother responding to rightwing nonsense because the purveyors of it will never admit to the truth anyway. Thus I usually just put an emoji to express my opinion without having to waste my time on someone who can't handle the truth even when it stares him in the face. Here though, in response to your charming message, I'll make a rare exception even though I'm well aware that it's almost certain to be a complete waste of my time.
"Unsubstantiated?" Perhaps if you read news from reputable sources, you would see that Murdoch, Hannity, Carlson, Ingraham (to name just some of your heroes at Fox "News" ) have been quoted as saying that Trump's claims of fraud were not correct, that the My Pillow Guy, Powell and Giuliani were stating nonsense, and that they (your heroes) didn't believe any of it...yet they all kept promoting it on air to please the gullible braindead Magamorons who live and breathe by what Fox "News" tells them. That alone tells you that the truth is meaningless to Fox...which makes anything they say (including the COVID article you so proudly posted here) highly questionable. Some of what they say might occasionally be true and maybe even this one is (after all, a stopped clock is still correct twice a day) but much of it is pure BS intended to feed raw meat to their hungry rightwing viewers. And by the way whether your article is ultimately proven to be correct or incorrect, at this point in time it is pure speculation. You don't know and neither do I.
And as for your ridiculous statement about China - how the Hell would YOU know what happened? In my original post I specifically said that I don't know...but you seemed to overlook that, as people of your political beliefs so often seem to do. I was questioning the source (Fox), not the theory being espoused. I said that in simple, plain English, but apparently "Is that true? Maybe, maybe not - I certainly don't know" was something you either failed to read or failed to understand. And by the way if you can stop staring at Tucker Carlson photos long enough to read non-partisan articles on the subject discussed in the story you attached, you will see that - never mind people like you and me who know NOTHING about this - the experts who do have some knowledge say that either theory (i.e.: lab or nature) is possible and NO ONE really knows which...but 60% tend to think it's nature versus 40% who tend to think it's lab. Republican politicians (or entertainers like Tucker...who IS, please face facts, an entertainer and NOT a journalist) of course prefer the "China" explanation because it gives them one more chance to spew out their racist bile.