

yes, originally used only cables - because that’s all there was
That’s not correct. The Arpanet, the precursor to the Internet, already included the wireless AlohaNet by Dec 1972. The Arpanet didn’t become a true Internet, a network connecting 2 or more other networks, until 1977. So the Internet as we know it has always included wireless links.









It does not now and has never meant wires.
The internet as we know it has always included wireless links. The AlohaNET, a wireless network, was part of the Internet from the start. The ArpaNET became the Internet in 1977 when it first connected multiple networks together. The AlohaNET joined the ArpaNET in 1972.