Seems they've forgotten what "broadband" actually means
When I was in tech college, the meaning of "broadband" I was given to understand meant that the data was transmitted over a broad band of frequencies or channels, as opposed to "narrowband" which meant the data was sent using a single carrier frequency or channel.
But, just as the media have misappropriated the term "hacker" to mean "cyber-criminal", it seems the term "broadband" has now been misappropriated to simply mean, "internet access that is faster than yours!"