We’re saying that “intent very much matters here” but when we are talking about people flashing headlights to warn others of a police-manned speed trap, we focus on the effects of the action. Isn’t the intention of the person flashing their headlights (in many cases) to help people break the law? That is, people see the signal and slow down while passing the speed trap only to increase speed once past, evading detection.
This looks much the same to me as people warning those around them of ICE activity.
Nobody flashes their headlights with the intent that someone will speed up. Driving at night, you're not even able to determine whether oncoming traffic is speeding.
It is literally telling someone to obey the law, because the law is watching.
If you have the app, you likely don't need the reminder. You're either evading ICE or helping other people steer clear of ICE.
Police notifications on GPS don't really give you much notification to turn off onto a different road or to avoid them, at least on freeways, which is the only time I've seen them.
This looks much the same to me as people warning those around them of ICE activity.