Huh ... you must have watched a different movie than I did. I saw a movie with a very positive message for my three young girls. I saw absolutely no "political correctness" anywhere in the film at all.
Personally, I was thrilled to be able to sit with my girls and reinforce with them that they can be anything they want to be if they work hard and aren't afraid to take risks and push the envelope.
I agree with what Nat said ... I (unfortunately) took my kids to see Kung Fu Panda 3 a few weeks ago and I thought it was utter brainless garbage. I felt like I needed to take a shower when it was over, it was that insultingly bad. Kudos to Disney for making a film that positively impacts the lives of kids and sends a great message of success and achievement to the future generation.