I think one of the comments on your article put it best, but I'll try and reiterate it here.

Things are almost always the way they are (civil rights, policy, etc) because someone benefits from the current situation. Even if your campaign is objectively beneficial to the vast majority, someone is going to resist. There is simply nothing worth working for that will not have some kind of resistance. That means that incremental change only goes so far. Sometimes we really do need large shifts, just like needing to overcome the activation energy of a chemical reaction.

Remember, Martin Luther King Jr was not liked by the majority of Americans in his day. I do not think the publisher of this post would have liked him either.