Re: BS Marketing 101
That has to do with all of the conspiracy theories that Facebook demands money for exposure... they assume everyone who "liked" them is still an active user, didn't unfollow them for spamming feeds, and even cares about anything they post. FB's algorithm is dirt simple: If you stop liking, sharing, and commenting on a page of with a friend, it stops showing you anything from that friend/page, and by and large, people are actually happy to have your uninteresting crap cleaned off their feed.
Quite a few pages have paid their money only to realize users still don't give a damn, and still aren't seeing their posts, so I basically just unlike pages that persist in spreading that rumor now.