Excellent work bohm, checking the background, and confirms what I suspected was the situation.
Hassan is qualified, his charges are clear up front, and people are not pressured. On top of all that his charges are apparently not atypical. I don't see much ground for complaint here.
You could have also mentioned that the accusations of plagiarism are unfounded as anyone who has read his books knows. He may not use academic footnotes, but his text is full of references and acknowledgement of the work of Lifton and others. He at no point pretends to have developed these ideas himself.
I would argue there are problems applying some of his recommendations to JWs because JWs are somewhat different and less extreme than some of the other groups he deals with. Plus his focus is helping families remove loved ones from cults, whereas, more typically, unhappy JWs are trapped in the religion precisely because of their families. These are more criticisms of the applicability of Hassan's work to JWs than criticisms of his work in itself.