There are reddit admins who poison reddit ads, because they can freely place ads on subreddits without cost. It's annoying.

The reddit ads system could be far better and without the corruption. It does cost more and is less effective than Facebook ads even for very specific subreddits, and it costs a ton more than it's worth even when there is no one else buying ad space in a subreddit.

Correct me if I'm wrong if this has changed.