This man is certainly entitled to his humble opinion, or rather, make that his proud opinion. I thinks he's as wrong as cornflakes on mashed potatoes. See how he introduces his antitheses: "a hard-bitten, reactionary fellow of the type..." and we all know we don't like that kind of fellow! Then he gets into laughable examples suggesting "beautiful gestures of love to the Jewish people" are only of recent origin. They are not, they are as old as the Church (as expressed by "love your neighbor").
Then to understand his truly twisted logic, here's his next example: "one of the oldest things in the Church is sin." Has anyone ever claimed sin to be Sacred Tradition? Of course not, but if you haven't been paying attention he's dragging you by the hair in the direction he wishes to take you.
"Anti-semitism, though it has long been practiced by Christians of many stripes, including Catholics, is not intrinsic to the Tradition, as the Second Vatican Council makes clear in Nostra Aetate." No sir, that was clear well before V2.
Do you see the unspoken point he's making? Anyone who does not accept modernism (such as Pope Saint Pius X warned) is opposed to the Church. "Now my more-Catholic-than-the-pope acquaintance is left in the last place he ever thought he'd be: dissenting from Holy Church simply because he confused his reactionary ideology with orthodoxy and mistook the shadow tradition for the Tradition."
I kind of got the same impression.