>We know about the CoV-1 leak because /the chinese scientists told us about it./
Sometimes humans tell the truth, sometimes humans don't.
Pointing to one group of people who told the truth, and asserting that means another group must be telling the truth is just silly.
Especially considering the former example was in regards to a small accident relative to potentially the greatest accident in human history.
I know I would be strongly inclined to lie if I was responsible for the accidental death of millions of people.
If a human being was not inclined to lie about their responsibility for greatest accident in human history, why would humans ever lie about any mistake?