I wonder how much of that problem/perception is down to relay overlaps (or a lack of).
Soon I want to dedicate some time to this... although I'm not sure 100% what 'this' is.
But basically researching how my, my followers, and my following relay set list overlaps. And then across the network (of people), more broadly.
I have a feeling there are a lot of isolated clusters of activity, which whether intentionally or not - aren't intersecting.