In fact, Twitch have very sensible approach here: it will mute any infringing material in replay. By taking this hard stance not providing the copyright owners

In fact, Twitch have very sensible approach here: it will mute any infringing material in replay. By taking this hard stance not providing the copyright owners with any way to monetize the material, Twitch discourages trolls from participating. Only a real content holder who is genuinely afraid of losses due to piracy, and is ready to spend resources on it despite no returns, will.