Earlier quoted context omitted.
There's a real possibility that a gain-of-function experiment created SARS-CoV-2: "Lipsitch’s activists (calling themselves the Cambridge Working Group) sent around a strong statement on the perils of research with “Potential Pandemic Pathogens,” signed by more than a hundred scientists. The work might “trigger outbreaks that would be difficult or impossible to control,” the signers said. Fauci reconsidered, and the…
It is an absolutely braindead thing for a nuclear power to do - bio/chem weapon R&D. The reason why the US abandoned that course so long ago had nothing to do with morality - somebody in the DoD simply realized that they were furthering the state of the art in dirt cheap WMDs. If you already have nukes, you want to keep the cost of doomsday devices as high as possible - limiting the number of potential rivals.
How do you know this?