Just a factor but if you combine it with greed then this is perfect formula for people to get scam just like what happen on the subject.
For many times that this scams has been discussed don't know why there's still people take a risk to invest with these ponzi schemes. There are lots of educational and unfortunate stories release by media about this crypto scams, but people didn't learn. To bad for these people is they always want to learn from their bad experiences that's why they suffer badly when they get scam. If people will just became more smart enough to decline easily those scam offers for sure we won't see anything like this and there are few people will fall from these schemes.
As bad as it may sound, the best teacher is when you do it yourself - good or a bad thing, you still learn the most when you do it like that.
Everybody has chances to go through such ponzis, but many still succumb to them.