Agreed.

Call home features can be spoofed by a poisoning type of attack upstream in various forms.

This is not bullet proof and a cop-out with a poor solution for security.

You know who has effective call home features? Vendors that sell to major enterprises. It is a natural progression and a particularly nasty environment to live within.

If they are legitimately trying to protect the brand through force or merely forcefully controlling the app ecosystem... it's an abusive relationship to be in.

The fact this is not configurable without dead lettering the route is all they need to do to show tethering is something they consider as a viable security measure.

I'll pass.