It's definitely over the top! And it's meant to be so but there's a moral outrage in the criticism as well. I think a lot of it has to do with the downtown theater scene that the Village Voice covered and which Feingold represented to some extent (in other ways I think he resisted being yoked to "downtown theater" culture).
Attached is his reminiscence of the review 28 years later:
I think probably what pushed me over the edge was the film shown at the top of the second act, showing actual half-American Vietnamese war orphans. A great many people were infuriated by this, including a fair number of my fellow critics. Mackintosh donated a large sum of money to the orphanage where the film was shot, and put a sign up in the lobby saying so, but that didn’t make the outrage—using the plight of actual children to jerk tears for a commercial piece of pop kitsch—any less repugnant. Puccini would not have stooped to it.