@64bithero @GossiTheDog On a related note, I recently started a blog for my hobby miniature projects.
It seemed like a few others had blogs, so I started making a list. The first few were new starts just like me but as I kept looking I started to find more and more hobby blogs that have been regularly posting for nearly twenty years. The latest discovery was this month, and I added another eight or so blogs to my list.
When the rest of the world moved on to Facebook, Twitter and wherever else they never left. They just kept plugging away, their community may have dwindled, but it never died.
Niche survives just fine, and can be plenty sufficient for the people there.