So, in addition to the New England Journal of Medicine and Journal of the American Medical Association (and the people who recently published HCQ papers in those prestigious journals), you're now adding many of the most renowned evolutionary virologists to your list of people whose explanations you find laughable. That's quite a list.
I watched the video and he simply pieces together parts of what is known about viruses and then tries to convince people that somehow people in a lab, who had zero knowledge of what SARS-CoV-2 was (since the outbreak hadn't started yet), knew to take pieces from other viruses most closely related to CV2 and link them together into a new chimeric virus that became "almost CV2" and then evolved that chimeric virus into CV2 somehow. How the hell could they know to shoot for that endpoint out of the nearly infinite number of amino acid sequences that are possible for both the RNA and protein parts of the virus? That's simply not credible.
As per today's excellent article published by CIDRAP, another top-notch infectious disease research group out of the U of MN (led by world expert Michael Osterholm), the idea that someone was able to "create" CV2 is preposterous. Sure, if they were given the blueprints to CV2, someone could likely make it, but how would anyone know to make it out of so many possibilities? And as per the comment below, if someone were trying to create a bioweapon in a lab, why wouldn't they start from SARS or MERS, which were very close to being pandemic-worthy (and far deadlier than CV2)? And even if they somehow "made" CV2 in the lab, why would they have released it in their own country?
Furthermore, he questions why anyone would go through the work of creating a new virus when they could simply take an existing virulent pathogen like the SARS (severe acute respiratory syndrome) or MERS (Middle East respiratory syndrome) coronaviruses and make them even worse, as all bioweapons programs so far have done.
"It doesn't make any sense to make a new virus that you don't know can cause disease in humans and try to create a bioweapon out of it," Andersen said. "That would be a really bad bioweapons person."
And with regard to the other possibility people talk about, i.e., that they had somehow obtained CV2 from the wild and were working with it and accidentally released it, there's also no evidence for that. Dr. Shi Zhengli (the "batwoman") published all kinds of genetic sequences from various bat coronaviruses she and her research group have found and they published nothing that close to CV2 - if they had, perhaps lab release could be an issue.
Even Kristian Anderson (an expert virologist and lead author on the Nature paper), who originally thought it possible that the virus could have been accidentally released from a lab, said that while "he can't completely rule out the possibility that the virus came from a lab, the odds of that happening are very small. He says the new coronavirus clearly originated in nature, no question about it by now."
Lastly, Martenson's use of Occam's Razor is what's laughable. What's more likely: that CV2 came into being in the same way every other virus in the history of the planet did, i.e., by evolution in some species, like bats, and probable zoonotic transfer to humans either directly or through an intermediate host, or that some researchers in a lab, not knowing the endpoint blueprint for CV2 somehow figured out a way to construct CV2? Hint: it's not the latter.
Also, there's no proof of a blackout at the lab in October, either and Dr. Shi Zhengli is not missing. The Chinese have acted very badly with regard to lying and covering up the true extent of the outbreak, but they almost certainly didn't create the virus in a lab.
Shi Zhengli, PhD, director of the Center for Emerging Infectious Diseases at the Wuhan Institute of Virology, a biosafety level 4 (BSL-4) lab in China relatively close (25 to 35 kilometers [15 to 22 miles]) to the Wuhan live-animal market at the epicenter of China's outbreak, has extensively published the genetic sequences of isolates from the bat coronaviruses she studies.
None of them match those of COVID-19, Andersen said, something Shi herself confirmed in a recent interview in Scientific American. "If she would have published a sequence for the virus and then this pops up, then we would have known it came from the lab," Andersen said. "There's no evidence for this, but there is plenty of evidence against it."
https://www.cidrap.umn.edu/news-per...tists-exactly-zero-evidence-covid-19-came-lab
https://www.scientificamerican.com/...wn-viruses-from-sars-to-the-new-coronavirus1/