Why do I think of this as a metaphor for the rivalry between local Boston [i.e.: "fringe"] theatres versus the big-barn New York shows?
Well, for one thing I know that "the curse" was actually the raw fact that for years the bigger-budget Yankees could Buy a pennant when the Red Sox really couldn't --- and even today when New York sends up yet another National Tour of a Big Apple warhorse, the producers buy so much ink and air- and tube-time that people with big money enough to pay the prices think the visiting team is the only one in town. So the metaphor fits there.
For another, I looked through the cast-list and out of 14 excellent performers, only THREE include any New England appearances (except maybe an occasional National Tour). One of them worked once at "North Shore" and another in Newburyport. Only one (admittedly a "co-star" in a beautifully integrated, excellent ensemble) has a Boston credit --- she's a Conservatory graduate --- but her roles in two SpeakEasy shows are lumped, late in her bio, under "Other Theater:"
[Further evidence: the show rehearsed In New York City!]
There's more. It is not a review, as Larry saw a preview performance.