I find this comparison odious.  Fr. Martin is not accused of heresy by any authority in the church but by some minor fringe groups who imagine they are the orthodox "police" of the faith.  Church Militant, Lifesitenews, nor Fr. Z have no authority to pass judgements on other Catholics, and it is these minor groups that are the pain in the side of the body of the church.  Most just ignore their vitriol, but apparently this author is trying to give these small groupies some credence.