The part that bothers me isn't the AI, it's that nobody in those threads was writing a review. They were talking to each other. Reddit took a conversation between people and sold it as a product, and the people get nothing, not even the choice to opt out.

I run a forum, so I thought about this when writing the terms. What we ended up with is simple. What you write is yours, you can export all of it any time, and it's out of AI training unless you say otherwise. It cost me nothing to promise, it would cost Reddit a product line. That's the whole difference.