Avi K,
“1.”Yid” in English is a pejorative. Archie Bunker used it.”
So is “Jew”. And so what? This is not the real reason you have a problem with people using Yiddish; it’s just a deflection.
“2. Someone who wears peyot and tzitziot outside as an expression of pride rather than for halachic reasons has a problem.”
I disagree. Pride is not the best reason to wear peyos and tzitzis out, but if someone is going to feel proud of something, why not be proud of his Yiddishkeit?
“He has turned them into fashion symbols, like wearing a magen David.”
No, he is simply a person using dress as self-identification. Hashem requires us to wear tzitzis and to not destroy the corners of our beards. These are halachic parameters on our fashion, and there’s nothing wrong with using them to self-identify as a Jew, or even more specifically, a chassid, Yeshivish, etc. Don’t kid yourself, a kippa sruga is no less a fashion statement than long peyos, especially inside the Jewish world.