(The exception is Japan, of course. But Japan is Japan. They're not going to be speaking English any time soon, elite or not).
Is this said from experience? As a former conversational English teacher in Japan I would like to point out that 10,000+ native English speakers/teachers would beg to differ. English is required starting in Japanese middle school and in many schools it is beginning in Kindergarten. How are the Japanese not learning English exactly? What language do you think Japanese pharmaceutical presentations are made in when they attend global conferences? I wonder why all highway signs in Japan have English translations as well? (ok, so almost all) Note how much English appears in advertising. Or what about the thousands upon thousands of loan words that have entered Japanese from English. Nah. No English going on there; let's just through around random statements....
Sadly, this affliction is rampant in the USA. Happily, it is a dwindling number, and perhaps will soon be eradicated.
I wish you were right. I wish it was a dwindling problem, soon to be eradicated. I want to believe that. However, conservative Christians (which should make heads explode with paradox) aren't going away anytime soon. I think you are right that most Boomers that hold these beliefs will be departing in the next decade or so. But they have grandchildren, many of whom listen. I have been teaching middle school geography for ten years. This year was the very first time I had 2 sets of parents question my teaching of the Big Bang as they didn't believe it. I teach at a private school with intensely involved parents so this was not an issue of some parents just happen to start paying attention. While not a strong example, it does lead me to believe that the idea that Young Earth/ID types are fading away is simply not true.
Never say you know a man until you have divided an inheritance with him.