The thing that bothers me about the current usage of Yiddish, particularly in Chassidish usage, is that it is often spelled phonetically instead of according to the standard spelling. As a simple example, the Yiddish word for “good” can be pronounced Gut or Git, depending on which side of the Gefilte Fish Line one comes from, but, either way, it is properly spelled with a vav, not a yud as I have seen on many signs in New Square. Yiddish is a real language with standard spelling and grammar.
P.S. The Gefilte Fish Line is a real thing. Google it.