You'll get your refund eventually but first it will try and gaslight you that Air Canada is a woke mind virus before calling you an asshole and then stalking you.
I've noticed "has this sub gotten more right wing recently?" posts reaching the top post of the day in the last 6 months or so. r/norge and r/unitedkingdom being examples. You can automate bots that change a subreddit's consensus on certain topics by bot-spamming threads pertaining to those topics, especially in the first hour of a thread going up. I don't know if that's happening, or if it has more to do with the Reddit protest that saw mods abdicate their positions last June and new mods being responsible for the change... but it could also be a bit of both.
Negative examples are often just as useful for training an AI as positive ones. And it all depends on what you want to use the AI for. A moderator bot, for example, needs familiarity with the whole range of user responses it might see.
That gives me actually a fun idea for a Lemmy instance, it has an automated review process that bans posts/comments that are too similar in style to reddit posts/comments.