I dislike holocaust-deniers as much as the next guy, but I find it troubling that one's political opinions should prevent us from considering a person's work in a distinct domain. This is especially true in the present case: I see no evidence that PJB has crossed the Hitler stream with the common lisp stream.
People can be smart and respectable in one domain and stupid in another.
People can be smart and respectable in one domain and stupid in another.