I didn't read very far (might do so out of curiosity later), but on the early pages the hostility also extended e.g. to therapists, who often aren't even medical practitioners and presumably don't have a direct interest in medication.

While therapists are of course also doing business or at the very least earning a living by providing the therapy, and it's thus true they might not be entirely disinterested, they may well have genuine concerns on the psychological and emotional safety of their patients. The combative and even arrogant attitude the early pages show towards well-intentioned professionals is, IMO, unwarranted.