It is striking how just about any subreddit is several orders of magnitude larger than their average engagement. It's seemingly no matter the size and affects huge and tiny subeditors. I guess there really are that many bot accounts on reddit.
Many people (including myself) will just not post. If you want to see what’s going on with a subreddit in your feed, you have to subscribe/join it. You can manually visit all your favorite subreddits but that can be very tedious and doesn’t fit the “news feed” type of behavior that people want to use.