When I was a school-aged child in the 80s and 90s here in Canada, we used to get routinely evacuated because people would "phone in" bomb threats.
"Swatting" to me just seems like a nuanced evolution of that same phenomenon. Only I thought it was that targets were now peoples' homes and the Internet has made it so that targets and perpetrators could be much farther apart from each other.
Other than that, given that "reporting a false threat against a school in order to trigger a response" was happening when I was in school 30+ years ago, I can't help but wonder "what's the 'news'?"