The difference is you are comparing an extremely far left memo Communism/Marxism to one he wrote that is backed by science and is middle of the road common sense. You are acting like this is some extreme right wing babble when all actuality its not.
Being a Marxist/anarchist manifesto and being backed by science, economics or political philosophy aren't mutually exclusive. I don't view the memo as common sense - that's not to say it's incorrect, but I don't view it as common sense.
I'm not acting as though it's right-wing babble; my point is that I am against people saying that Google has a left-wing bias, when it's hard to imagine that positions which are core to the left wing would be accepted at Google. As such, I'm not making a comment on the content of the piece, I'm making a comment on the culture at Google which is supposedly 'left-wing biased'.