In their defense, Wu Ao-Shi (the pirate queen of Pinghai Bay) really existed as a legendary Iron Fist in the comics. There was also the female Iron Fist from 1,000,000 B.C. (but, I guess that's included in the SJW pleasing phase) and Fongji Wu (the Phoenix-Iron Fist hybrid from AvX) But, you're right that Colleen never became the Iron Fist in the comics, and it really does seem like a response for the call for representation.