The difference between you and Grigg is that Grigg actually knows Joe Sobran and you don’t. It is easy to make derogatory judgments from long-distance — particularly since you are interested in demonizing people because of their viewpoints and you seem disinterested in their actual character or motives.
Grigg and I disagree about many matters — but he is acutely sensitive to prejudice due to his own ethnic background — and he has always exhibited zero-tolerance for bigots of any type. You mis-characterize his position as “anti-Birchism”. Grigg is still very much a Bircher. He accepts their basic premises. But he also has enough character and integrity not to defend the indefensible. Grigg has denounced JBS President John McManus for his anti-semitic comments before Catholic organizations and Grigg has not been shy about pointing out character flaws in other senior JBS leaders.
Before Grigg, Alan Stang and Gary Allen performed the same service when they dissociated themselves from the Society and exposed the “dirty linen” of the JBS.
Then he certainly knows that Sobran is not only an anti-Zionist but a racialist as well. He has spoken before the avowedly racialist "Council of Conservative Citizens" (successor to the old White Citzens Councils). How in the world can one be a radical individualist and a racialist at the same time?
Joe Sobran is a typical palaeo hypocrite for opposing Jewish ethnic solidarity while advocating it for non-Jewish Europeans (all "nationalists" and advocates of "racial integrity" are opposed to Jewish ethnicity because they know that the distinctiveness of Israel is connected to the unity of the human race under G-d, which is why they see Jewish separateness as causing "racial amalgamation" and "leveling" everywhere else). And by making himself an enemy of the Jewish People he has made himself an enemy of G-d.
There is no legitimate use for solidarity with any anti-Semite for any reason at any time or in any place. Period.