Meanwhile, the major social networks (if not all of them) are still very good at creating echo-chambers and filter bubbles. So nothing has changed since 2016.
Yes, some are insular and don't really develop if that is your thing, but you can always have multiple bubbles.
Their approach was rather one size fits most with many lowest common denominator. Discovery is a damn useful service which is kind of obvious in retrospect with reviewers and guides being something people pay for.
Never thought I'd be one of those people but I'm ashamed to say YouTube had got me now, think it's a combination that it just seems to really know what you'd enjoy watching and the fact the default logged out versions content is so painfully bad that I'd never want to engage with that version of YouTube anyway.