However, assuming one has an understanding of the status quo, and a desire to change it, "getting offended" can be a useful, and rational, response. (I include the quotes because there is an amount of subjectivity in what various people label as "getting offended".) In particular, such responses can serve to educate other people about behaviors which perpetuate the aspects of the status quo which the expresser desires to change.
So, while this article presents itself as a highly rational and neutral argument, embedded within it is actually a deeply conservative point of view.