Avi K,
“Avram, we are talking about language. Yiddish, along with Germanic names, was used to declare Sepharadim not really Jewish.”
So I addressed this point in my first response to you, and you said your issue was about maggidei shiur using Yiddish when their students didn’t understand. So I responded to that, and now you move the goalposts back to my first assumption. So I will again say that two wrongs don’t make a right.
Regarding your family, my Litvak grandmother married my German grandfather, and that apparently was a pretty big to-do, and they were both Yiddish speaking Ashkenazim. Just because one Jew or even one family behaved badly doesn’t mean all Yiddish speakers are collectively responsible and must therefore stop speaking Yiddish and eating kneidlach accept the superiority of falafel and hummus and replacing all savs with tavs.