You do not understand. I am equating the desire of unhinged private citizens to commit violence to the desire of other unhinged private citizens to commit violence. Reasonable people aren't the problem.
"An app that gives you real-time updates on the location of people you deeply dislike" is
It's extremely unlikely that there are not more people out there
The point is that If you're in Apple's position it doesn't especially matter who is being targeted and how many people are actually using the app that way. If they don't want to be in the anonymous people-reporting app game on the basis that it may make people unsafe vis a vis said unhinged private citizens, that's not unreasonable or inconsistent, and it doesn't necessarily take an extraordinary government threat to the business for Apple to want to distance themselves from that kind of app.