I've come to understand that the consistent and persistent depowering of Wonder Woman in the various media forms is linked directly to the idea that the concept of "superheroes" is rooted in male power fantasy. In particular,
patriarchal male power fantasy--in which maleness is always seen as dominant in every respect: physical strength, intellectual acuity, leadership, political strategy, athletic ability, combat prowess, etc.
This fantasy is inextricably tied to an unhealthy dose of misogyny and sexism (not to mention anti-queer/anti-trans bigotry).
I can't remember the last time I read a comic book or saw a movie/TV show featuring Wonder Woman where she wasn't depowered strength-wise so as not to make, say, Superman look "weak" by patriarchal standards; where her wisdom of Athena wasn't erased so that say, Batman could have all the answers and all the strategy and all the solutions, leaving Wonder Woman to be either chastised for being too brutish in her approach or mansplained to because she was depicted as insufferably, unbelievably naïve and unknowledgeable (irrespective of how long she's been in operation). All of this is the creators of such media talking directly to who they believe is their base: men who would be intimidated or feel emasculated by a woman's excellence, by her perceived ability to outfight or out think or outshine a man.
Here you have an immortal Amazon, blessed with gifts by goddesses, who has been alive for over 3,000 years; and all that time, she has been learning and training and perfecting her gifts such that she (and Nubia) is the best of her people--people who, by the way, are
themselves extraordinary. She comes to Patriarch's World during World War I or World War II (depending on the source material), and has thus been operating as a superhero and diplomat for somewhere between 82 and 107 years, and with all of that experience under her belt, she is *still* written into situations with the bold, if unspoken, assumption/assertion that even those with significantly less experience, power, and skill are her superiors (especially if they are men).
Dr. Marston predicted that this would be Wonder Woman's fate if left to other hands and other minds; that, in the end, "blood-curdling masculinity" would win out and any attempt to have Wonder Woman actually challenge the patriarchal status quo, to have her actually be better than her male compatriots (which, if she were a man, most would accept this as "normal") would be met with fear, anger, and resentment, followed by attempts to "put her in her place" by any means necessary.
Also: It doesn't strike anyone as odd AF that Diana's female friendships have all but disappeared and her relationships to the women and girls in her family are relatively nonexistent? That isolation strategy is one of the telltale signs of a patriarchal agenda and a patriarchal imagination (irrespective of the gender of the person who holds it).
Gail Simone already let us know that there was an actual agenda, too.
I've been terribly displeased with Wonder Woman media for a very long time (I find my woman empowerment media elsewhere--y'all should read FAR SECTOR). We won't get to see a lot of Diana in Kelly Sue DeConnick and Phil Jimenez's HISTORIA, but I do know that what we do see will be devoid of those terrible features (patriarchy and the male gaze).