Apropos of Frances' point about the retrospective gratitude of patients regarding their coercion and abuse, there are a number of points that must stressed.
First off, it must be stressed that human convictions crumble all too easily under the weight of collective pressure. It has been observed that a man or a woman, when faced with a mob pouring scorn on even their deepest held convictions, will be filled with doubt regarding those beliefs. This is usually interpreted as meaning the individual has been shown the truth, when in reality it illustrates the extent to which the ideas that hold sway in a man's mind attain to their position of dominance not through rational deliberation but as a result of irrational forces below the threshold of consciousness and social-psychological pressure to conform.
This in part would explain why so many people retrospectively support their oppression, because beliefs are fragile, their fragility increasing in proportion to their lack of numerical (and of course the support of authoritative opinion, which exercises such a hold on man's minds) support. The fact that there is such numerical and authoritative support for the pro-forced psychiatry position lends it a certain cache, gives it a certain power of attraction, and impresses itself on the minds of all but a few rugged individualists with the force akin to that of a revelation, such is the power of popular opinion.
Human beings are predominantly irrational creatures, subject to unconscious pressures, and nothing exerts greater pressure on our thinking than the herd, which mobilizes all the resources at its disposal (such as derision, emotional blackmailing techniques, and the confidence and sense of power that numerical superiority confers) to ensure conformity. There are many social-psychological experiments that lend credence to this. This alone can account for such so-called "gratitude".