Maybe. When she first came on board, there was lots of gossip about her having a baby and being a CEO and all that. I personally think that was unfair nonsense.
However, I do have a problem with how she generally treats people and I have a problem with the relentless self-promotion she seems to spend much of her time on.
If it's unfair to talk about her being a CEO with a baby just because she's a woman, why isn't it unfair to talk about the uncountable number of fashion magazine covers and fashion focus she seems to have plenty of time for? (I understand of course that there's a bit of a feedback effect from the media on this, but really, just run the company and ignore the noise).
She's obviously very smart, but I worry that some of her personal interface issues may overwhelm all that. All the best business decisions in the world may still turn into a failure if you alienate your people by reading nursery rhymes to them and treating them idiot children.