I cannot speak to broader trends among art curators but I think it is a mistake to blame broad trends in the field of art history for the existence of forgeries. They have always been present, and likely always will be in some form. Failing to conduct a rigorous study of the history of an object should have course be criticized, but that kind of unfortunate mistake should be contrasted when an object which might have a good history free of the potential of looting. This happens for antiquities, works of art, and many other objects. Some forgeries are made maliciously to fool, other works of art which are inauthentic appear absent any wrongdoing of the creator.
In fact the shaming of institutions which takes place when a forgery or fake surfaces has a number of unfortunate consequences.