Comment by shw1n
posting my explanation of the graph from another comment here
"it was meant as a visual specifically for Paul Graham's article here: https://www.paulgraham.com/mod.html
I should probably generate a new one or just remove since it appears to have sent this message to multiple people
But yeah I don't think it's entirely tribalism, but I do largely agree with PG's essay, though I'd understand a contesting of his statement that 'the left and right are equally wrong about half the time'"