I mean there are cases where that can be devastating.
"Ohai here's your old abusive ex, here's a chat box just for good measure, good luck!".
There are people who I'd never ever want to be within a textbox and tap away from accessing me, for any reason, period.
You can get restraining orders in the physical world, the digital world however has no boundaries when the apps themselves are too stupid and are defined by real-world-illogical programming code. I wouldn't expect an app to understand a 'court order' but that's a real human construct. How do we design against that in the digital space, when you are so accessible that if you have a crazy dude following you you're basically forced to retreat as there's no effective measures/guards against this?