Concise overview of the history of the various DSM editions. I've been working in mental health field since shortly after DSM-III was published, so pretty familiar with III/III-R/IV/5 issues. For the most part it's fairly neutral and descriptive (like DSM-III!!!) -- e.g., makes the point that the first big external push on American Psychiatric Assn. re a particular diagnosis was to get the diagnosis OUT (homosexuality; early/mid-1970s), whereas most subsequent (late luteal phase dysphoric disorder is an exception) activism has been around adding or maintaining diagnoses (PTSD, autism spectrum disorder, gender identity disorder) or making their criteria more inclusive.
But then in a few cases he has a definite stance and pushes it hard, maybe a bit repetitively. For example, he clearly thinks melancholic depression (with dexamethasone suppression test as marker) is a valid entity that should not have been collapsed into major depressive disorder, which he sees as an overinclusive hodge-podge.
Could stand to go into more depth on such issues, which would raise the prior question of what validates a disorder, and then subsequently a criteria set, and separately a measure or measures for determining whether someone meets the criteria, but he mainly bypasses those concerns to go back to more documentation of the thesis that the alleged influences on DSM revisions (advances in research; improved ease of use in clinical practice; alignment with ICD) are almost completely nonoverlapping with the real influences (self-interest of well-connected psychiatry researchers; profit-seeking drug companies; disability accommodations desired by patients or their parents; insurance reimbursement qualification incentives for practitioners and patients).
If you already are aware of the extensive, overwhelming evidence consistent with this somewhat cynical take, then you won't find his account novel, but it is good to pull together the story in one place. There are other sources (e.g., Kutchins and Kirk book on the selling of DSM-III gave a more detailed takedown than this book does of the claims of triumphant improvement in interrater reliability starting with that edition) for learning about a specific edition or a specific issue.
Possibly the NIMH abandoning DSM in favor of RDoC will accelerate progress. As this author briefly acknowledges, it just doesn't seem possible to solve simultaneously for all the purposes to which DSM has been put. If you want standardized criteria for research that only change when some definitive new evidence emerges, then you're going to make different decisions than you will if you want to codify whose treatment should be covered by insurance, or raise awareness of a societal problem, or track changes in prevalence of disorders over time, or........