To be fair when is Wonder Woman not handle poorly? Everyone complains about every little thing about the character that it's really impossible to write Wonder Woman. The best writer who had a good grasp on it was Azzarello and yes Wonder Woman is being written poorly in sm/ww and is it due to Superman? No it's due to writer lack knowledge on Wonder Woman and how the see her (Or perhaps they try to over contrast)
Also you said "they chalk it all up to envy which presupposes that Wonder Woman's the trophy girl in the middle of this rivalry between Batman and Superman."Look around you, the main people that's against the pair have the word Batman in their name, Batman Avatar picture, and people that you can pretty much guess their favorite hero is Batman or they just prefer him over Supes.
Please don't let yourself be fool by the guys like Toplel who try to play the bias game, and try to pretend they really care about WW at heart.
The person that hates smww the most in this place and probably the whole world is me to be honest and I really couldn't care less about Batman, Wonder Woman is my character numero uno and as far as smww goes we're pretty much on the same page. I don't know if Toplel's got an ulterior motive to dislike the relationship but from what I've seen his criticism is usually legit and I almost always agree with it.
Well if two people dislike the same thing of course there'll be a mutual agreement. But my issues is I don't hate the pair... I just hate how the execution is handle. I also respect your reasoning for not liking it, but not Toplel for his reason is pure jealousy.