I don't think that's the solution, though.
Just spreading out the problem doesn't changing the scaling of it. If anything, it might make it harder, not easier.
A big instance can have an army of people attacking the problem, moderating consistently and as a team, organized into shifts or whatever they need to do to do it as efficiently and effectively as possible.
But if you divide the misbehavers into various instances, the problem is the same size, but now instead of one potentially organized moderation team you have the need for moderators at every independent instance.
Better, I think, to collect all the misbehavers into one place where they can be dealt with.
@BeAware@social.beaware.live