Didn't see the 5-0 drubbing to Man City last year?
Carlo had the fortune of having a Calvert-Lewin as a striker, James slipping world class balls to Richarlison for a Derby victory and Mina available more often than not. Rafael has Rondon and Townsend...
I actually don't disagree with you to a large extent - I am just trying to point out that Rafael has had to deal with significantly larger headwinds than Carlo did.
I am incredibly frustrated with his inability to change things up, Carlo at least tinkered a number of times with formations etc...
Definition of insane is doing the same thing over and over again and expecting a different result, I am just struggling to see how a managerial change (where we can't dangle the carrot of spending our way out of it to a manager who is brave enough to even think about taking this on) will actually stop this rot.