I've watched a notable decline in Reddit content quality the past few years. Obvious engagement farming posts that I didn't used to see. A low quality jpeg of a character from the TV show the reddit is about, titled "who else agrees this character is the worst!" People just asking open-ended questions because it'll get everyone commenting, even if the question isn't very interesting.

I have to assume because of the growing phenomenon of Reddit being the only valuable results returned from Google, it's becoming more valuable for companies to astroturf Reddit content that will appear in Google. So there must be either bot-run accounts, or some kind of business of karma farming to later sell off accounts with karma that won't get flagged for spam when they start endlessly posting about how great [PRODUCT] is.