"“In order for us to take action against players who use voice comms to harass others, use hate speech, or otherwise disrupt your experience, we need to know what those players are saying,” Riot wrote on their website. “Which is why, moving forward we’ll need the ability to analyze voice data.”

It sounds right. But let's look at the other side of the coin. Even though they say they will only inspect reported players, it is a bit scary that Riot can listen my "anytime". We have already being tracked by Google, Apple, FB, etc. Now game companies on the way.