I have always enjoyed reading your essays, Paul. I don't necessarily always agree, but I'm not the one who has made such a success of it :-)
The two claims that "I'm British by birth. And just as Jews are ex officio allowed to tell Jewish jokes, I don't feel like I have to bother being diplomatic with a British audience." are so offensive that I initially thought that you must be joking, but on re-reading, I don't think that you were.
The Jewish claim is just pure racism; the British claim is slightly more subtle, in that it contains a hidden suggestion that IT in the UK is a de-facto joke.
I am not usually terribly sensitive about such things; I'm not Jewish, I am British, and whilst I could write an essay about what is wrong with the UK IT industry today (and not much about what it excels at), I do not concur that the state of the UK is one which (in most circumstances, though not yours, of course, Brother Paul) would necessitate diplomatic skills to discuss.
I am interested to read of your experiences. Ones prejudices are best kept to oneself.