I recently saw someone leave fedi at least temporarily as a result of harassment, and one thing they highlighted was that most of us don't see the harassment they were getting because of how federation works and the fact that our instances block all the vile ones most of the harassment was coming from.
They were running their own single-user instance. 🙁
We really need better resources for single user instances to benefit from third-party moderation resources, but we also need to get the narrative out that running a single user instance is a horrible idea unless you want to be your own fulltime moderator or drowned in engagement from the worst parts of the net. Treating it as a viable option now really sours folks to the whole concept.