Your observations are right on target.
Maybe the author should start packing his bags. You are a principled person, and this question reflects your uncommonly accute sense of justice. The problem is, when the push comes to shove, it is not these Earls of Salisbery who are going to be kicked out of Britain...
I do not know whether you would be intersted, but here is a link to something I posted today: it is Sartre's Anti-Semite and Jew.