I read How to be an Anti-Racist around this time last year. I read it for three reasons. First, it was obviously topical with all the BLM protests going on. Second, I had heard of this book before and it was at or near the top of the best-seller list, which made it a logical candidate for random reading. Third, and this was more important than I care to admit, I read a review of Kendi's book that was so negative that I thought there was no way that the author was describing Kendi's views accurately. It seemed to me that Kendi was probably having his positions consistently misstated and I thought it was worthwhile to learn more about his opinions in his own words instead of relying on others.
I was wrong. His book really is that bad. Whatever random quotes you've seen pulled from it probably do actually provide a pretty accurate picture of Kendi's argument. In fact, Kendi doesn't really present an "argument" as much as he just strings together a bunch of declarative sentences, most of which are just raw assertions with no real logical force behind any of them. This sounds like an odd thing to say about an academic, but I'm honestly sure that Kendi truly understands what circular reasoning is -- I mean, I'm sure he could define what that is, but he doesn't seem to think that it's a concept that applies to him as well as other people.
(About half the book is autobiographical, so to be fair, it's not really intended to be a deeply-argued polemic. But it doesn't even make a token effort to actually support any of its arguments).
Kendi's book is only tangentially connected to CRT. Real CRT scholars would not consider Kendi one of their own, and Kendi would not consider himself a CRT scholar, so there's agreement there. That said, Kendi's "thesis" (we're using the term very loosely here) is that all observed disparities between racial groups must be caused by racism (1). That's at least CRT-adjacent, but it's like a very dumb person's view of what CRT is, not what steel-manned CRT argues.
1. I know it sounds like I'm strawmanning him, but trust me, that's really his position and I didn't believe it either until I read the book.