Why they aren't on Twitch (Ninja and Multi-Streaming)

https://www.youtube.com/watch?v=cclk9n62ADI PREVIOUS TWITCH VIDEO
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Why aren't Ninja and Drake on Twitch? Besides the obvious issues with Twitch, between the new ad policy which yes, has been reverted, but still sets a scary precedent for things to come AND them doubling down on rules against multi-streaming, Twitch has become more hostile to creators and their viewers yet again to their own detriment.