If you apply the "Mastodon instance is a Subreddit" model, it makes a lot more sense.
You can start to see why Mastodon views more decentralized moderation as part of the creation process, and that's important. At the same time, the concept can't really exist in the user experience on Twitter, by design.
Still, there's much more to it than even that...
It's such early days with new social media that IMO the specific mental models people apply will make a huge difference in how they interpret the experience that unrolls before them...and when their interpretation of a discouraging event based on a broad model goes viral, it raises a ton of dust in the form of fears / doubts.