Would Happy and Rabbit I wonder have been amongst those that saw the novel, and especially realism , and most especially Charles Dickens as dumbing down society? Or even the 70s academics at Oxford who wouldn't accept the Brontes as part of the canon? There has always been popular culture and the "elite" have always asserted their value judgements on the value of different sorts of cultural capital to preserve elite status. Perhaps Happy and Rabbit are unconsciously swapping their credentials in terms of cultural capital and in so doing accepting that the polish that "elite" schools confer is actually important?
I know that the counter argument will be about aesthetic value / beauty but evaluating that is terribly subjective especially when society changes, new technology appears etc.
When I visit the "elite" boarding schools my friend's children are at they have the pictures of the same celebs etc that appear in my DDs' elite school magazine. They watch MIC and Geordie Shore etc. but not because they are role models, but because they are entertaining, in the way the music halls were, and before that the globe theatre....... They are today's Bottoms and Falstaffs. I suppose in retrospect we will be able to comment on what the zeitgeist reflects about society as my DDs' EPQ does about Thatcher's Britain
but it is very obscure in the era you live in.
But focusing on it as the cause of the country's ills is reactionary and a distraction from the real issues. Instil a love of learning and people will carry on learning all their lives. My music teacher gave up trying to inspire a love of opera in a bunch of Led Zep worshipping northern girls and resorted to singalonga Oliver. It worked, it opened up the world of music to me far more than sitting listening to LPs.
My friend who faces a bunch of disruptive boys whose main interest is not X Factor but tractors and agriculture machinery has gained their attention through discussing German engineering with them (hence the cardboard models) so that she can expose more fertile minds to contemporary German media and the German literary canon. However who is to say that a lifelong love of German engineering, and the language skills to go with it, won't enrich their lives and encourage them to look outwards at the rest of the world?
I would also shoot the editor of the Daily Mail though.