I agree with the broad strokes of the author, but it is still hard to read this without feeling annoyed in my gut, since the author is cis white man with a PhD who comes off as a pompous ass advocating for the most "logical" means for substantive change (and default implying that movements go nowhere because people become fractured in no small part due to emotion). This sometimes amounts to a colorblind approach to coalition building and emphasis on Marxism and classism that, perhaps unsurprisingly, doesn't require decentering white men like him. The author makes sure to point out that social improvements for the working class benefit everyone, but I would point out that helping solely the white working class does not benefit everyone, which we saw with Depression Era New Deal programs. That said, I think that the author would agree that when the most marginalized among us has their needs taken care of, then everyone will have benefited. However, though he doesn't write so explicitly, he doesn't think that attempting to rally around Black trans women would actually bring about these changes, due to the realistic/pessimistic view that people mostly mobilize in their own interest.
While I think we broadly agree, this book is not nuanced enough for my liking, especially considering the way in which I suspect people will use it to justify not doing the internal and external work of learning to care about people different from them. I agree that, too often, perfect is the enemy of good, and we often need to step back and refocus on substantive, incremental change, what I think is missing from this book for me (the same thing that would likely appeal to others, especially white liberals) is that the tone is so authoritative, and doesn't account for holding multiple truths and feelings/feelings as truth. Again, perhaps this should be unsurprising considering the author's background. The section in which this is a slap in the face is when he says, "Maybe that's not fair...WHO CARES?" Well, I would say that most of the people I know care, and even if, at the end of the day, we will form coalitions with others who hold some beliefs with which we strongly disagree, that doesn't mean that it doesn't cause cognitive dissonance, and that cognitive dissonance is a state that some people live a larger proportion of their lives in than others (especially cis white men). And this matters in terms of personal burnout and wider sustainability of the movement. It also matters to many people, philosophically, when they have to evaluate whether the ends justify the means in a particular situation.