If you go into something with the intention of 'this sucks' and then do not even want to make it work would it not reason that it probably will fail?
Scrum usually fails because people become enamored with the process instead of thinking about what that process is for. Layering on more and more of it because something is not working. Until you are busy with 40% of your time just managing scrum. Something in scrum not working throw it out. Do not double down and add more.