That day is already here. I live in LA, and I am often told, "What?! You live in LA and don't speak Spanish?!"
I remember when Spanish-speaking people, when asking for directions or the time of day or whatever, would politely ask if I spoke Spanish. Now, store clerks, people on the street, etc., will walk up to me and start rattling off in Spanish, assuming that of course I speak their language. When I tell them I don't speak it, they act annoyed and put out.
Yep, I don't doubt it for a minute.