If the product is free, you are the product. For some reason I don’t think they exclude paying users either.
Also, since certain percentage of Reddit users are already AI or bot, we reached the circle of training AI on AI generated content.
I think the most important thing we can do is shout about this from the rafters, so every potential IPO investor can hear. Most of the subject matter experts have fled. The best data is available for free elsewhere. (And none of us are too happy about having our collective knowledge shared without attribution or appreciation by an AI, but that’s not the point. Money is the point here.)
I created several throwaway accounts through the years that were used for limited periods. Then, the passwords were randomized and forgotten/deleted. I wish I deleted all those comments and posts before the accounts, but AI wasn't a thing back then. There's a lesson to learn here.