My argument is under Dean every attacking player has got steadily worse as the season has progressed.
El Ghazi carried some threat, now non existent. Same with Samatta who was a breath of fresh air when he first joined, now he offers as much goal threat as John Terry's lucky pants. Trez didn't do much but he did occasionally score goals or offer some form of threat now he is the new Tonev.
Davis does nothing, he doesn't win headers from set pieces or shoot on goal more than once every three games. McGinn is probably lacking match sharpness but he rarely even looks a shadow of the player that started the season. Even Grealish's form has gone steadily down hill.
You could argue Hause and Konsa have improved since the restart and Luiz definitely has. But there is no confidence or belief in that team when it comes to creating or converting chances. Who can you blame that on other than the coach?
It's definitely not all Dean's fault, but he has to carry a large share of the blame.