You are in fact redefining the term. Which isn't an issue, it has been redefined many times before: https://en.wikipedia.org/wiki/Political_correctness (Which I see you've edited to be included in your response). My problem with your definition is that it obscures the fact that "political correctness" is almost always used as a pejorative, whereas your definition gives it a more neutral, clinical meaning. If we were discussing religious dogmatism, it would be the difference between "devout" and "puritanical." Your definition obscures the normative usage of the phrase, and can lead to people talking past each other.