> It just flies in the face of what we know about human behaviour across recorded history.
You're right, human behavior is often abhorrent and focused on differences.
But trying to solve that problem by pretending that scientific taxonomy is the cause, is counterproductive. People want an easy answer, and it's easier to warp science than change the hearts of men. But it's an insidious "solution" that has untold corrosive effects and impairs our ability to inspect reality with integrity and honesty.
As scientific taxonomy has often been a historic justification and taxonomy really is just a social construct itself (and often terribly inaccurate, see the problem of defining species for example) it's pretty easy to see why it seems like a good place to tackle the issue. I don't think we can pretend that science is some pure place that exists in a vacuum apart from society.
You're right, human behavior is often abhorrent and focused on differences.
But trying to solve that problem by pretending that scientific taxonomy is the cause, is counterproductive. People want an easy answer, and it's easier to warp science than change the hearts of men. But it's an insidious "solution" that has untold corrosive effects and impairs our ability to inspect reality with integrity and honesty.