It isn't a petty personal attack. You believe it is petty but I explained my reasons. Ignoramous isn't a "name", it is a noun describing someone with the attributes that Cowen has (I specifically say that, as he is doing throughout the interview, he pontificates endlessly on subjects in which he has no expertise).

Just to be clear, whether he has those attributes or not, people like that exist. It isn't unacceptable to say something negative...ironically, as you yourself show by calling my comment "petty". One rule for us, amirite comrade?