I haven't messed with this yet, to me it seems like it could theoretically map all device locations, triangulating positions? Has that been addressed?
That's known as Transmitter Hunting (aka Fox Hunting).
It's a fundamental flaw of most wireless communication. Are you referring to something more specific?
Yes, as I understand it, you choose the level of location precision to share https://meshtastic.org/docs/configuration/radio/channels/#po...