I think you are looking from a very different angle. A site with only 200 visitors/month can't move a needle, but it's a valid part of ecosystem.
Tbh, for niche hobbies even one new visitor a month is a win, if they actually read the article and not skim over it. An eager enthusiastic listener is a price not easily won on the internet. Having even one per month would mean you personally taught something to a classroom of peers in a meager 2 years. Blogposts easily can move live ten times as longer.
For people that spend most of their time on small internet, sites like that are essential, because they work on another level. You know you engage with someone who has a passion for the same things you do, and had a time to polish their words. You know you can reach out for help and be kindly greeted.
This is parts of the internet that are so boring for anyone else, they are totally safe from spam and ads.
That doesn't scale, can never scale, if anything like that becomes popular, the massive slopfest would follow and the slop would be sold instead of the original.
And yet those boring places – boring for everyone not interested enough – are there, and people have a way to reach to each other and talk to each other about shared interests. The internet isn't dead for nerds.