Fauci must know because it was a hot potato.

Bat Woman et al were having a good time promoting the Wuhan lab as doing world-class research. Which is true, because they were doing the gain-of-function research there that a lot of virus research groups deemed to be too risky. Gain-of-function research was stopped in the US, then I guess it more or less moved to the Wuhan lab. The routing of the funding suggests as much. Someone wanted the research to continue. And they were happily publishing papers on the gain-of-function stuff. Specializing in bat corona virus, of course.

Because of the history of the research, it wasn't something obscure that nobody cared about. It was a hot potato. If he didn't know, then he is incompetent and an honest man would have resigned. But all his actions suggest that he is less than an honest man. Hang him high.