If you enter into a contract, knowing the details, that's your responsibility. They are not 'scum' for making the offer. And the people who take them up on it are not necessarily 'stupid'. Obviously, some of their clients are very happy.
At this point, you don't even have any proof that they have unhappy clients.
If you enter into a contract, knowing the details, that's your responsibility. They are not 'scum' for making the offer.
Your second statement doesn't follow logically from your first. They can be "scum" even if I'm responsible for my actions. Perhaps we just have different perspectives, but I believe that if you spend your time trying to rip off people who don't know any better, you're destroying value. The fact that they agree to it doesn't absolve you of any responsibility. If I sell a car with a critical defect that I fail to disclose to the buyer under the assumption that it's their responsibility to get the car checked before they buy, I've done something wrong. I wouldn't want someone to do that to me, and it's not right for me to do it to them.
Further, it's not at all obvious that some of their clients are very happy, but the collection of blog posts, magazine exposés, BBB complaints, and lawsuits is sufficient evidence for me that they definitely have unhappy clients.
EDIT: I don't have any proof of this, but from the conversation I had and the research I did, I highly doubt that the people forking over $32k have "all the details". This sounds to me exactly like any other high-pressure exploitative sales seminar.
At this point, you don't even have any proof that they have unhappy clients.