Are you saying that Yiddish was holy when the vast majority of Jews spoke it but not today? I don’t think so.
And you can make choizik all you want; Yiddish in all its holiness will never be silly.
People thought Orthodoxy was dead in America and the same for the language of Yidden. Boruch Hashem for their miscalculations.
If you like to make projections, put your money on continued geometric expansion of the yeshivish and chasidish worlds and Yiddish as the/a spoken language of the majority of frum people in America.