First of all that is not true. Second, even if some are critical of the Pope and his actions, it does not make them "anti-JP II". Most of the traditionalists here will tell you JP II is the legitimate Pope. I've only seen two or three sedevacantists and two are no longer posters.
This is part and parcel of the magisterialism argument. In some posters eyes the only way to be Catholic is to happily embrace everything that comes out of Rome. If you don't you are labelled schismatic. That is magisterialism as the article points out. It's possible to disagree and be fully Catholic (you well know this btw).
I was sort of this way until I had the opportunity to do research with several "traditionalists" who I considered to be just barely inside the Church. What I learned from questioning and listening to their answers is the frustration they feel when it comes to this issue. Thanks for posting the article, it has given me more clarity concerning the terms of Conservative and Traditional.
I was shocked on a number of occasions when referring to myself as a traditionalist and having it interpreted SSPX'r, which I am not. But, by far the most interesting label I ever received was from a very liberal seminarian (in his late 40's) who called me an antique Catholic and the Church I wanted as the Church of Nostalgia. He didn't last long at the seminary thank goodness!!