First, the "so" doesn't follow at all. And the "ignores math" is inaccurate (and, frankly, bizarre). But also, you're mischaracterizing the argument. I haven't said that "every grouping of humanity" blah blah blah. I said a particular grouping schemata has some basis in biological reality but has no real use. And I'd argue that your insistence on putting people in hopelessly broad groups and insisting on the utility of those groups is done for political reasons (or at least that you're mindlessly repeating claims made by someone else for political reasons, which you might not be aware of).
There are differences among groups, but "race" isn't a meaningful fault line. My extended family has a higher average IQ (I'm sure) than any "race," and Barry Bonds' family (
http://en.wikipedia.org/wiki/Rosie_Bonds,
http://en.wikipedia.org/wiki/Bobby_Bonds,
http://en.wikipedia.org/wiki/Reggie_Jackson, etc.) are much better athletes on average than any race, etc. But when you're talking about very diverse groups containing millions or even billions of people, you're going to lose any meaning, and you're most likely going to be telling "just so stories" involving massive overfitting.
AA isn't an ideology. But, yeah, the best way to ensure that blacks get a fair shake in America is to pretend that racism doesn't exist and not do anything to level the playing field. Definitely. Smart take.
The statement you quoted isn't denied. But that's very different from the claims of Jared Taylor types that are supported by so many here.