Marvel didn't say that.
And I don't have all the facts here. A similiar post was posted to imgur earlier this week and some people explained it very good, even with sources!
But basicly it's a lot of issues involving Wonder Woman, feminism (maybe, again, I am just recalling from memory) and some other shit. Since I am terrible at phrasing myself without good facts (or about subjetcs I know more of) my comment here makes it sound weird and not right. But I still felt obligated to defend them a bit, since no one did it before.
There is a lot of discussions about Wonder Woman, there's no denying that.