My newsfeed is almost all signal. This is, in part, because I am ruthless. If you are overtly negative (which is different than having opinions differing from my own), you get hidden. If I don’t find value in your postings, you get hidden. If you’re a high school friend I friended just to be nice, I hide.
I hide unhesitatingly.
I hide remorselessly.
But what if you need to hide a LOT of people?
I don’t say that to be sarcastic. I say that to point out that Facebook is built in a way that encourages noise (narcissism, memes, trolling) which is why that hide button is so valuable.