I Don't [bleep] Get It

So we are watching TV with the closed caption on since my husband has some hearing loss. It's much better than having a full blown IMAX experience in your considerably smaller than a theater living room, trust me. Anyway, I happened to notice that certain words in the text were replaced with [bleep] yet I distinctly recall hearing the word spoken and not a [bleep]. So I had my husband rewind it to that spot (gotta love the DVR) and sure enough, the word was bleeped out in the text even though the person clearly spoke the word. So that tells me that we can hear the word but we can't read the word?!? Who the [bleep] made that rule?!? 

And, yes, I do realize that the most likely explanation is someone simply made a mistake but it's more fun this way.