Personally I'm not fully blaming Shoe and I certainly get that he is literally only a rookie and is playing out of his normal position, although back row isn't totally foreign to him. But think about this. There have been tries scored against us when others have missed their defensive assignment ... but in all reality the opposition wouldn't have even had the ball at times without a silly no look pass or tap on that has done nothing but create a turnover. And one or two of those from him have led to opposition tries so yes, he should shoulder blame, at least some of the blame anyway.
If for example Parker drops a ball and the opposition score in the next set ... Parker is usually the one to cop the blame, the whole blame and nothing but the blame. But somer players are getting a bit of a free pass when the same happens.
Right now I would say we don't have a single player in good form. Not DCE, not Foz, not Walks, not Jake, not Marty, not Shuster. We aren't 16th on the ladder right now because only 4 or 5 players are playing badly.