When you use an open protocol, you can't control behavior by just controlling one app. See

Bitmap - Bitchat Heat Map

Real-time monitoring and visualization of ephemeral Nostr events with geospatial analysis and hacker-style interface.

Jack's client can't avoid easy teleportation by not including it in his app.

appreciated @Leo Wandersleb . Been on bitchat a lot and wanted others opinions. Most questions I’ve been able to answer.