Not to defend the people who questioned his attitude, but if i were to try and understand their comments, imo its that they misunderstood his arm flapping etc, that was actually anger with himself as he knows he can do better with passes etc, for his annoyance with others and maybe petulance.
Clearly his anger, annoyances and arm flapping were directed at himself as he obviously holds himself to high standards.
He has a great attitude imo, to be such a silky, skilful player who also works his proverbial balls off, cant ask for more tbh.