It has come to my attention that Mastodon, and/or OSocial, and/or the Fediverse, are no longer what they once were. They're being flooded by Normals. Or People who Don't Speak my Language. または私のアルファベットを使用しない人。
It's becoming like ... birdland.
Or worse: Facebook.
So, here's a thought for you: Facebook was once literally Harvard.
And whatever you think of FB or Harvard, it most certainly isn't any more. Which is a thought you might want to keep in mind. Because change.
Dunbar's number is a well-known concept now: the idea that people can maintain stable social relationships within groups of about 50-150. It's not just the relationship between yourself and each of the others, it's how /they/ relate to one another: does Bob like or hate Sue, or Jose, or Gita? With 150 people, there are 22,500 relations. With 30,000, there are nearly one billion.
There are reasons for suggesting and encouraging smaller instances, as OSocial admins recommend.
Generalistic and moderated instance.