A lot of it echoes the book "The Victorian Internet" that digs up historical nuggets from the early days of the telegraph that sound like the birth of the internet. (e.g. people running away and marrying people they fell in love with even though they'd only ever had text/Morse communication with them)
But it seems that they're interpreting "radio" in the modern sense, and so not counting TV, mobile phones, Bluetooth, WiFi, wireless charging etc. which the originators may not have guessed at, but wouldn't have abitrarily placed a boundary on their hopes based on categories not yet invented. Radio, in that bigger sense is a very vital thing, even if it's "normal" to most of us.