Amazon is training its AI models on Twitch livestreams, and its users are not happy about it.

Twitch, which Amazon owns, announced on Wednesday that users could opt out to prevent Amazon’s AI models from training on their content. That announcement also served as official confirmation that the training was happening at all.

On a livestream explaining the changes, Mary Kish, Twitch’s head of community, said she expected a user backlash.

“We don’t expect you to be happy or excited about this,” she said. “I don’t expect anyone to react to this favorably.”

She was right.

The live chat function on the livestream was awash with hundreds of anti-AI…