The point of editing questions goes beyond just correcting grammatical errors and factual errors. The point of editing questions is to make them better questions. StackOverflow is not a personal soapbox for users to say whatever they want and have no fear of censorship. StackOverflow is a collaboratively edited question and answer site for programmers.
The parts of the question in question added nothing to the site and were argumentative. In order to make the question better, they were removed. It's not censorship, it's collaboration.
The FAQ clearly states this also!
##Other people can edit my stuff?!
Like Wikipedia, this site is collaboratively edited, and all edits are tracked. If you are not comfortable with the idea of your questions and answers being edited by other trusted users, this may not be the site for you.
To reiterate: If you are not comfortable with the idea of your questions and answers being edited by other trusted users, this may not be the site for you.