You don't seem to fundamentally understand why it's a game changer. Your opinion on the quality or originality of the film is completely irrelevant.
A female driven action film is probably going to be the highest grossing box office hit of the summer in North America. More than Guardians, more than Pirates, more than Transformers, Tom Cruise, Spider-Man, Christopher Nolan, etc. If you'd told people that in January they would have laughed at you. This is a property WB has had in their library for decades upon decades and never touched because they didn't think people would see it -- and now it's legitimately a pop culture phenom that has opened the superhero genre to an entirely new audience.
If you don't think this is going to change the types of superhero movies that get green-lit you aren't paying attention.