This is resolved, however, I think people are also blowing this out of proportion. If you hit decline, it stops; If you hit Accept it stops. The only way its eavesdropping is while its ringing, which stops eventually even if your not around your phone.
And it's just as common letting the phone ring and use the volume or power button to silence the tone/vibration (for whatever reason --wanting to appear indisposed without directly declining etc).
So no, I don't think they are blowing this out of proportion.