Sloppy reporting keeps calling these "fake 911" calls, but each case to my knowledge has been where the swatter calls the local direct business or non-emergency line, rather than try to fake out a local 911 call and working around ANI identification. Such calls should always be viewed with suspicion.
It's hard not to notice that reporting always treats the dangers of swatting as a kind of force of nature, in which hackers are the only party with agency. Given the difficulty of stopping people from making fake phone calls compared to other solutions one might think of...