Not sure what the OP means by shtultz, but if it means being proud of our Yiddishkeit and observing the Torah (the translation of the Yiddish “shtultz”) – this is one of the important idea, especially in America, of Geon Yaakov.
It’s known that one of the greatest nisyonos of our post holocaust America is obeying the first seif of shulchan aruch:
אל יבוש מפני המעליגים
This is obviously not the idea of gaava which means being proud of YOURSELF, rather being proud of the Torah that we represent.