This post is complete bs. There are law and regulations. When you have some trouble, you can't just tell them it was a great project. If someone takes your word and invest paypie and gets trouble will you compensate his loss?
Yes, they should. But governments never allow that, they want you to think you need their protection in every area. But at reality, governments only think of governments.
The laws right now forbid from US to participate, but the blame is not on the citizen but in the ICO for allowing participation, that is why every ICO can't accept US citizen, they MUST follow that law unless they want trouble, but US citizens are not forbidden to buy paypie tokens somewhere else, so if you used VPN to participate, nobody will know that you participated, and your transaction will never be traced, so you could easily say that you bought your tokens in an exchange, so should you participate in an ICO anyway, no, but nobody will know if you do.