I know people with multi-accounts, and multi-hundreds of friends accounts and they all say they're annoyed by how irrelevant most of the content is by default even with as few as 30-50 friends on an account.
I have 20 and even then most of it is muted. I think it's the platform and the culture that the service creates which give rise to hiding stories and unsubscribing from people's feeds.
Either that, or I just don't care for random, short-form content.