I find this to happen between groups of instances which audiences has different stamps on the front cover of passports.
In case that is going to turn out to correlate with “worldview[s] that [are] objectively incompatible with [the other] civilization”, … what could it mean …
They are more than welcome to spew their incompatible worldview on Twitter. I don’t understand why anyone would be upset they don’t feel welcome on Mastodon; they got everything they wanted on Twitter from Musk.