I am (part) Jewish, but that still made no sense. If he really is on a level of crazy similar to me, it is good to stay away.
Even if you're a different religion I don't think that should mean that you should go bat-stuff insane if someone mentions the name of a different religion's holiday.
I might be atheist but I'd hardly throw a stone at someone because they mention Christmas or Hannukah or Ramadan.
And I know Christian, Jewish, Muslim and Hindu people who similarly wouldn't go mental because someone brings up another religion, especially if it's not even discussing the religion, just a holiday.