Well it's not like Snyder invented the Warrior Princess aspect of WW. Take it up with George Perez I say. So, saying he hates Gadot's version in particular is disingenuous to my mind.
Perez did ramp up the warrior princess aspect, yes, particularly as his reboot threw back the Amazons into a bronze age culture instead of the highly advanced and enlightened utopia originally envisioned by WW's creator. That had its advantages and its drawbacks, from a narrative angle, but I think the later became more noticeable as time went on, and we wondered what big philosophical wisdom could be preached to us by the envoy of a backward, isolated culture with forced segregation that had basically been SENTENCED to do penance by their patrons.
Still, while Perez DID have Diana wield weapons and use deadly force, she was still more champion and ambassador than warrior, and her go-to weapon was the lasso most of the time. The double ax and shield were brought in under only special circumstances where deadly combat was expected. Also, his artwork NEVER had Diana showing any kind of relish or glee in the exercise of violence, actually the opposite, she looked anguished at having to resort to such measures. So the warrior princess aspect was still downplayed as opposed to the heroic champion of peace.
The whole sword era actually began in the wake of the Alex Ross Kingdom Come series where Diana was much more violent and warlike, precisely as it was an elseworlds where a frustrated Diana had been deemed to be a failure at her mission of peace by her people. People liked the simplistic "SHE LOOKS KICK-ASS!" aspect, which yeah, does have its appeal, and it began to permeate the on going comics.
The problem is not that Diana may use a sword or any other such weaponry, because sure that can have its place, the problem is when THAT, and its implicit sense of permanent aggressiveness, becomes her default status. The warrior then overshadows the other aspects, and
Diana is more complex and enlightened than that. At least the way I see her. Notice that her iconic lasso can be both offensive and defensive. It is both tool and weapon, aid and restrain, flexible and unbreakable. It is a symbol of everything Diana is, of everything Wonder Woman is. A sword...
is a sword.
Still, it does not mean I will not enjoy the movie even if the warrior princess aspect is dominant. I can understand a character can be represented with different nuances, if she is complex enough. And the fact that Gal Gadot was chosen for the role, with her obvious warmth and friendly, cheerful demeanor, hints to me that they probably want to use those traits of her as person and actress precisely to balance the warrior aspects that may be emphasized by the limited screen time of a supporting role.