While this doesn’t prove they made and leaked the virus, it doesn’t exonerate them either. A proper investigation is needed. When you say you rely on experts, you should definitely listen to them but unfortunately when people are defending their colleagues it’s much harder to do this. Further, many scientists would take any questioning of this persons ethics as castigation of the whole scientific establishment and become defensive. Even otherwise, it looks like the tide is changing among experts now, more and more are agreeing the lab leak is a viable hypothesis.