I have been thinking about this scene a lot recently: https://m.youtube.com/watch?v=hj_4KIKHRFY&t=60s

America is isolating itself in so many ways. You could rewrite that scene and reach the same conclusion.

I follow this approach. It's mostly because I want to own the land I build on.

It works well, but it's hard to automate. In the end you must manually cross-post, and both the post and the discussion will vary by community. You end up being active in multiple different communities and still getting little traffic from the effort.

It's not such a great way to drive traffic. On the other hand, it's a wonderful way to work in public.