Setting up HeForShe was "GCSE", was it? What have you done to equal that?
Given the choice between her saying something groundbreaking or something supportive, I'm glad she's saying something supportive. Those asking for her advice were not looking for intellectual disquisitions.
Incidentally, the content of your critique is at least as hackneyed as anything she has written, and the sarcasm of "a great role model for eleven year olds" is teenage in tone, but with one important difference: your writing undermines another woman, rather than supporting her.