I don’t think we can put this all on Lincoln, but he certainly accelerated the process. I am from Missouri and my Dad always argued with his sister, my aunt, that Lincoln was the worst president ever for the lives he cost on both sides. God rest their souls.
Me and your old man would have got along...
When measuring the legacy of a politician, the body count is a pretty reliable tell. A leadership failure index, if you will.
"Atop a mountain of skulls, I ruled from a throne of blood!" is a FAIL tag. Unless you are a rancorous pogrom-minded sectionalist like some of our posters here. Then high mortality causes you to rub your palms together gleefully and murmur, "Good, goood, goood Master Vigo! More, more!"