It isn't clear to me that we would have anything resembling the approaches to a scientific concept of consciousness that we have today, were it not for passing through something like psychoanalysis on the way. Freud's contributions would have been replaceable, of course, had he not been there — just as Galileo's would be. But condemning Freud seems like condemning Newton, who likewise had plenty of wrong ideas.

The cult of Freud is unfortunate, but not particularly relevant to his contribution.