We knew from the beginning

Well that's interesting.   Chiefly because the conclusion was reached so early but also because was suppressed from the public conversation.  From Leaked Pentagon Report Forensically Dismantled Fauci-Led Natural Origin Study by Hans Mahncke. 

Researchers at the Department of Defense wrote a devastating takedown of the Proximal Origin study, which was used by Dr. Anthony Fauci as proof that the COVID-19 virus had come from nature. 

The takedown, dated May 26, 2020, was written in the form of a working paper called “Critical analysis of Andersen et al. The proximal origin of SARS-CoV-2.” It was authored by Commander Jean-Paul Chretien, a Navy doctor working at the Defense Advanced Research Projects Agency, and Dr. Robert Cutlip, a research scientist at the Defense Intelligence Agency. The paper came to light on May 15, when it was leaked to the public via virus origins search group DRASTIC (Decentralized Radical Autonomous Search Team Investigating COVID-19). 

The working paper forensically dismantles the natural origin case made in Proximal Origin and concludes, “The arguments that Andersen et al. use to support a natural-origin scenario for SARS-CoV-2 are based not on scientific analysis, but on unwarranted assumptions.”

The existence of this internal Pentagon paper is crucial, as it proves that government officials were well aware in the early months of the pandemic that there was no evidence in support of a natural origin of the COVID-19 virus. Additionally, given the crushing discrediting of Proximal Origin, Pentagon officials would also have been aware of Fauci’s efforts to seed a false narrative about the origin of COVID-19. 

Proximal Origin was initially conceived by Fauci during a secret teleconference held on Feb. 1, 2020. The ostensible purpose of the teleconference was to deflect attention from a possible lab origin of COVID-19 and to shift the focus to a natural origin theory. Fauci directed a number of scientists, led by Kristian Andersen of Scripps Research and Robert Garry of Tulane Medical School, to pen a study that could be used to discredit the lab leak theory. Despite being directly involved in the inception of the paper, as well as in shaping its arguments, Fauci’s role was concealed from the public. Fauci later bestowed Andersen and Garry with lavish taxpayer-funded grants.

The defects in Proximal Origin were immediately noticed by reviewers at science journal Nature. This fact only became known late last year from emails obtained via the Freedom of Information Act by independent journalist Jimmy Tobias. However, with the help of Jeremy Farrar, who now is the chief scientist of the World Health Organization and who had helped Fauci shape the natural origin narrative, Proximal Origin was accepted for publication in Nature Medicine on March 17, 2020. It boldly concluded that no “laboratory-based scenario is plausible.”