Naah. They have made two enormous mistakes. Firstly, not taking account of the CAS findings in the scope of their investigation. Secondly, to decide to shit in February 2023 instead of getting off the can. Those are two decisions they could have made very differently and chose not to. It is entirely their fault if the serious allegations don't stick for largely the same reasons as at CAS. And they is Masters.
Btw, no-one is saying they shouldn't have started their investigation, but what they have done since CAS is just stupid, imho.