I believe you're confusing the mere recognition of races and the fact that they exist with racism. They aren't the same thing.

Not to go all dictionary on you, but here's what American Heritage has to say: "the belief that all members of each race possess characteristics or abilities specific to that race, esp. so as to distinguish it as inferior or superior to another race or races."

Nothing in the post falls under the strict dictionary definition of racism. I would also argue that nothing in the post at all falls under any definition of racism.