Let's just say that she's been riding a false reputation for a long time, and it's largely fueled by the internet's fascination with a "super-smart and hot rocket scientest game developer". Did you know she worked at NASA? Give me a break. Talk with anyone who's worked closely with her and you will hear horror stories of just what a terrible developer she is. She was able to work at MS for so long because she's married to a very competent art director who was on the same team, and I can only assume that they didn't want to lose him. Well guess what? She got fired, he left a few months later, and now here we are picking up the pieces.
Read the Microsoft statement here:
http://www.ign.com/wikis/halo-5-xbox-one/Halo_5_Rumors_and_Leaks
“While we consider Corrinne Yu a part of our founding family and can’t wait to see where her talent takes her in her new role, we wanted to clarify a repeated misconception, most recently on an IGN podcast. Corrinne worked on a branch of our tools team and did not in fact work on either the Halo 4 or Halo 5 engine or graphics at all. Our current tools team will surely miss her enviable intellect, but we felt it fair to both her and 343 Industries to ensure that the nature of her contributions was not being misrepresented.”
She didn't do anything on Halo 4, but that's basically all they worked on for 3 years. WTF? That doesn't really match up with what she claims to have done. I have a feeling we were duped.