You appear hellbent on conflating humans doing bad things on behalf of religious causes with Buddhism itself, which does not, in any way, condone any of the acts you've highlighted.
> $massacres highlights a significant strain of violence in Buddhism
If I tell you that a book that declares in the strongest possible language that no harm shall be done to rabbits was in fact a trick of the demiurge and that only true believers could discern the true message for why the mass murder of all rabbits in the world was good and then I tell you that I am the Prophet of the Book, the religion and its teachings would not change. I would just be some idiot who had murdered all the rabbits in the world.
The one who had lied and cheated and schemed would be responsible, not the author of the book or their teachings. They would have created a Bizarro World of their own creation that took its root in the misery of their own heart.
This Bizarro World is not Buddhism, was never Buddhism, and could not be Buddhism and I have the evidence from the words themselves that Buddhism is not of genocide, of hatred, and of bloodshed.