There are people in my home feed that I used to see, that I never see anymore (yes, they still seem to be casting)

What happened?

creating and destroying; built flying cars & autonomous vehicles, now building /faust, more here: /july, web: july.rocks

If you don't regularly like their posts, you won't see their posts. Of course, if you don't see their posts you probably will have a hard time liking them.

Maybe when you're reminded that someone exists, take a run through their recent posts and like them to boost their signal on your main feed.