Hey Frank,
I have yet to read DiAngelo's book; it's been sitting on my shelf, and I will get to it this summer (and probably write a follow-up piece, reacting to it). But because I'm familiar with her other writings elsewhere on the Internet, I can't say my hopes are very high. I plan to "couch" the experience (reading her book) with reading other books (in tandem) that were authored by actual BIPOC. Sort of like when you're trying to lessen the taste of a yucky food by mixing it, in your mouth, with other foods that you find to be tastier.
Another problem is that there doesn't seem to be one uniform definition for "antiracism." That's fine -- it's not like there's one uniform definition for "feminism." But the danger is how it allows people to claim to be proponents of such a concept...and then proceed to weaponize it against the masses due to The Association Fallacy with a dash of academic elitism.