I had a similar experience when I stopped using Twitter. I only go back because a friend of mine posts there and I really like his posts. Occasionally I flip to my Following or For You tabs and they look incredibly sophomoric. It's 40 and 50 year olds using teenager memes and tropes. Then I realized, that a similar sort of mechanic applies on Hacker News so I decided to aggressively killfile users who annoy me one way or another. Now, most HN comment sections have a bunch of comments missing but the remainder are surprisingly decent.

The downside is that I now interact with HN a lot more, which I was hoping would not happen.