Well, the purpose of any business is to make profit just that they are being too greedy in their dealings. If we are to take these 3 people mentioned out of the crypto currency business, then there will be no crypto currency world again, sometimes we just have to play smart too as an investor irrespective of all these their activities mentioned by you not to really dupe people but to over make profit.

Things like these do happen in business, if you are to open a business and need to sell shares, would you not overhype our business for investors to come in? This is the same method they are using.