Opinions change after more information. Jorginho was class in Serie A, had great reputation, good skills in FM and FIFA (I presume, I don't play them), was wanted by Guardiola and Sarri, and cost a lot of money. It was a positive preconception after our last season's failures, so a player of that background was literally seen as a saviour from several levels above anything we had. Now that he hasn't lived up to expectations in games we have all watched and scrutinized, opinions have changed. It's nothing out of the ordinary, nothing wrong with that. Things change.