Christian Drosten is an opportunist pur sang and thinks he can lie his way out of it. He stated more or less the same thing in an article from the Süddeutsche Zeitung on 9 February 2022. I attach that link. 

This is what I write about it in the #WuhanTrilogy: ‘Incidentally, two years later, Christian Drosten will say in an interview with the Süddeutsche Zeitung that he knew nothing about the experiments carried out at the Wuhan Institute of Virology, and that the Chinese should have communicated proactively about what they were doing in their laboratory. 

Drosten says that at the time of signing the Statement in Support, he put his hand in the fire for his Chinese colleagues in Wuhan, but that he would not have signed the statement had he been aware of the scientific experiments Shi and her team were conducting.

However, we know that Drosten is lying flat out, as Andersen pointed this out to him during and shortly after the teleconference, but he simply did not want to know about it."@R_H_Ebright @Ayjchan @mattwridley @emilyakopp