It wasn't so much the power level they were complaining about but rather the assumption that Diana being a fighter was a "boy story".
https://www.mondo2000.com/2020/10/26...-age-of-horus/
Bare in mind that Diana's origin doesn't involve the death of her mother and the loss of her kingdom. And the story they wrote in Earth One is really nothing like the myth of Innana at all.
And of course, there's the wrongheaded idea of what is a boy story and a girl story. For a progressive writer, Morrison is surprisingly androcentric and small-minded about what stories you can tell with male and female characters.
I don't recall Perez complaining about the sword and Jiminez wrote her using one in his run. As I've said, the sword is a convenient scapegoat. Writers are more than capable of writing her badly without it.
Fair but, there seems to be a correlation between overpraising the Marston run and powering her down. As I said, there is this idea among certain writers of a powerful and competent Diana glorifying masculinity. She isn't the only female character who gets accused of this by the way.
I think it would be best to give it to another Amazon supporting character who can't fly. Also, no continuity since post crisis has shown her as needing the plane before she gets flight as far as I can recall. She either has flight from the get go or gets it relatively early.