And it's seldom wrong either.
Kids do have different behavior in different ages. Whether that's good or bad is another thing (in some things it's bad, in others are good). But culture, habits, etc, are not the same blob of sameness for centuries. Kids in 1950 are different than kids in 2020 or kids in 1900.
In this particular case, indeed, kids these days seldom read books, whether in print or eBook form.
Whether they still read social media pages, and online news, is beside the point when it comes to reading books.
I know plenty of kids these days who read books, lots of them in fact. Often reading fiction and literature especially.
Well, since you've mentioned anecdotal evidence, all the statistics say kids read less than ever. Down to 1/4 or so of what kids in the 70s read (including eBooks).
https://www.humanitiesindicators.org/content/indicatordoc.as...
~ Socrates
Yeah, it seems like the previous generation is always upset about the next generation, but they're not always wrong. Humanity has survived, sure, but most of the civilizations those sentiments were coming from haven't.
I wonder whether studies were done on it in Britain or Spain, both of which you could say had empires which collapsed (though this did not threaten their whole existence).
My main claim would just be that we don't have enough data to cite this quote (were it real) in mockery, as it is not quite as obviously wrong as it may seem from the very casual view of history.