While that is true in many respects, voice chat is quite difficult to police compared to text chat. I’m not sure how you go about automating or even monitoring that without recording everything people say using your service. Which then brings up a whole host of issues from data storage costs to privacy concerns to consent to record laws. You pretty much have to rely on users to submit evidence of their claims and that leads us back to the idea that users need to expect to have an active role in enforcing any sort of moderation policy.