Humans are collaborative. Collaboration includes violence. Hierarchies were created for allocating resources to rulers. Rulers restrict the capacity for violence of subjects reinforcing the hierarchy.
Anarchists don’t see the hierarchies as beneficial to humans. Preserving a world without rulers requires violence. Decentralize violence.
Your argument is mostly sound, except for some key details.
The pack definition is man-made and the idea of an unnatural naturally forming phenomenon is quite the contradiction
A majority of animals fight within their own pack/species other over stupid shit all the time.
Most of the violence these days can be attributed to a “pack mentally” or “Us vs Them” the packs are smaller than you realize.
Humans are collaborative. Collaboration includes violence. Hierarchies were created for allocating resources to rulers. Rulers restrict the capacity for violence of subjects reinforcing the hierarchy.
Anarchists don’t see the hierarchies as beneficial to humans. Preserving a world without rulers requires violence. Decentralize violence.