I brought up this issue the last time this ep aired in the US, though I didn't use the above subject line; I said "Why Irish names for the Nazis?"
The writers could have very easily used German or generic WASPy names for the Nazis but no, they chose distinctly, unmistakably Irish names. You don't just pull a name out of the air and get Colin Murphy or John O'Brien. You get names like Susan Ross and Tim Whatley and the names of the people who work for the Yankees - Whitman, Logan, etc. J. Peterman. Mr. Pitt. All generic names. Then you have other names which are probably the names of friends of the writers. I bet Art Vandelay and Bob Saccamano are friends of Larry David or Jerry Seinfeld. And Mr. Bevelacqua is probably the name of one of their gym teachers.
Excuuuuse me for being upset that the writers slandered Irish people and Irish Americans. There is absolutely no reason why the Nazis had to have Irish names.
At least in the episode that upset Japanese people they had the television executive who saw right through the crap George was trying to sell.