When Vin Diesel or Dwayne "The Rock" Johnson picks up a 6'5" 300 lb bad guy and throws him onto a car, it's dumb... but believable. And enjoyable.
When 95 lb manic pixie Margot Robbie does the same, it's not believable. That makes it even dumber, no matter how much your fetishizing of feminist pseudo-empowerment adds some enjoyment to it.
Also, guys watch bad movies and call them bad movies. No one sees Fast & Furious 27 and calls it high art. RedLetterMedia turned this into an entire critiquing genre. But it's the GRRL POWAH side who will desperately defend garbage like Ghostbusters 2016, not for its artistic merit, but for its politics.
In fact, this Tumblr post might be the first time I've seen one of the "watch it because it's women" types admit that they are watching a trashy movie just because of the lead's gender. That's progress, I guess, except she immediately loses all self-awareness and can't understand the appeal of dumb action movies.