Want to follow someone who posts a lot of interesting things about JS? Be prepared to see posts they like about curry poodles. Oh here’s some worst-in-class topic recommendations barfed out by depressed ML, and you can’t turn them off. What do you mean you don’t like Roseanne Nostalgia? Here are some Binky The Clown Stock Tips.
All social media should be topic, not user based IMO. This is the way the internet was originally, it was not really personality, or people based. you joined a forum about fishing, woodworking, programming, or politics to engage with other people on those topics. Off Topic things where either isolated to a specific area of the community or banned completely.
Today however we do not see to have topics on social media is it just a stream of everything about a person...
You can just use any of the numerous third party clients that have a sorted timeline and don't inject random posts in your timeline.
I follow a bunch of sports writers on Twitter to keep up on my favorite teams and fantasy stuff. Invariably, on slow news days, they will post about their kids, cats, the weather, anything other than the teams they cover. I generally don't mind but will unfollow if the balance gets too far out of whack or if they get political in an untenable way.
YMMV as far as where to draw the line between content and fluff.