I completely disagree. It's not tribalism, it's respecting coequal instance cultural differences. Each instance is self-governing, has an in group and an out group, and has culture associated with it as well as having voluntary association. If you want to erase individual instance identity and culture, good for you. Encourage that in your own instance or communities. We, as anarchists, pirates, neurodivergents and other things can decide these things for ourselves