Children who are read to every day will….well of course, this has always been understood. That’s why people do it.
Or did, until socialism required the destruction of private culture in families, and of embedded knowledge distributed by schools and teachers who thought it mattered.
If your Enemy Class sets out to create an environment in which people receive only the politically-approved-mass-culture, and only as visual ephemera, then you will get a feral underclass. i expect that’s what the buggers wanted all along.