It’s about time you let it go. How about you use your Free Market economic theories here?
If you are going to use free market economies, then Yiddish loses. More jews speak English or Hebrew than Yiddish and before you even bring up Frie jews, Sephardim have a say in the matter and they speak english or Hebrew today.
I have also heard stories that my Alter Bubbies and Zadies spoke either Ukranian or Polish (The ones who told me the story just called it Goyish and I dont think they knew which one it was)