He's got a specific skill. So he's probably more specialized than a general psychologist. And they aren't cheap either. Neither are other professions like lawyers. I personally wonder why the expenses are so high.
During my divorce, we had a non-disputed divorce. My lawyer charged something like $5K. I met with him for maybe an hour. He went over a sheet that was more of a fill-in-the-blanks type form. My ex and I filled it out. and I met with him for maybe another hour. From this, he generated the legal paperwork. Ex and I both signed and gave back to him. He filed it. And then met me for court.
For all I know, he had programs that did this all for him. Print out the questionnaire, fill in the responses, print out the legal paperwork. A few letters and/or driving to the courthouse. All in all, I'd guess it added up to less than a day's work (8 hour day that is). Yet it was over $5000. That's over $625/hour.
The guy's got to make a living so he charges what he charges. IMO, cults are on the decline. Religion is on the decline. Before the 80's, it was a different time in the world. People believed all kinds of crazy stuff and followed all kinds crazy people on the path to enlightenment. It still happens, but I've got to guess people calling for help from Hassan have dwindled.
I wouldn't call it a scam. Psychologists try to help people and can't always. Doesn't mean they're a scam (unless you believe like Scientologists). Scams, IMO, is where you have nothing to offer, but pretend like you can. Like faith healers, psychic surgeons, etc.