Sift (https://sift.quest/) is working hard on doing exactly that. We don't have enough users to actually show it off yet, but at our core we're building around a user reputation/relevance graph that we think will let people curate streams like that.

In our model, as soon as anyone you trust in our graph says "this is a 101 type post/comment" we can realize you are not interested in seeing it and de prioritize it in your feeds/comments while still showing it to other newbies or to people who have expressed an interest in engaging with that kind of topic.