Sure, that's fair. And of course the guy on the street is not waiting on a linguistics academy for permission to open his mouth.
But you're gonna have a tough time persuading me that a change like this is somehow "good" for our language. Languages get poorer as well as richer through use. The envy-jealousy case to me looks pretty clear: most people never learned the difference at school, or didn't understand it, or just didn't care, and now the rest of us have to accept that there's no word for "jealousy" any more. Coz the people is always right, innit? It's this attitude that is really modern.
So many other examples. "To step foot on" springs to mind. Yes, yes, entirely correct, and logical (foot! step!), and probably already in the dictionary. But to me it will always be what it obviously is, really: a mishearing by a lot of people who never saw it in print because they don't read.
Enough with the spammy questions. I'm not going to convince you and vice versa, and nobody is reading because the conversation has moved on. Good night.