What if they are just not as good as they used to be? What if other teams just caught up to them?
It has happened to many teams. Virtus.pro, EnVy, G2, fnatic, NiP (nip and fnatic are obviously still good, but not as good as they used to be). I think most of us are not expecting these teams to come back to their previous top level – so why are we expecting that of FaZe and mibr?