This article read to me like a concern troll (I'm just so concerned about diversity) overlying a passive-aggressive smear of the "I'm not saying" sort. As in: I'm not saying they're racist. Not necessarily. At least they say they aren't, and I take them at their word. At least until there's evidence that they're lying. Of course I have heard racist jokes.

Such language is unimpeachable on the surface and conveys something different underneath.