Fanatic: There’s nothing wrong with shaving, saying herr nur (or herr tzi) or with separate seating at home. In fact, all are beautiful Yiddishe minhagim, whether it is your minhag or not, and gidrei tznius. The Shulchan Aruch says that the more gedarim you have for tznius, the better.
So nothing is antisemitic. If it were, your faulting Ger would be no less antisemitic on your part.