Yes, I'm also having a hard time understanding why is this illegal.
Also, I'm not talking about if it's illegal or not, the point that I can't get over is that the ED guy didn't scam or hurt anyone. It was an honest, transparent, open source project.
if it quacks like a duck, looks like a duck, it's probably one in their eyes.
Exchanges that trade securities must also be registered.
You can trade ICOs on an exchange as long as both are registered according to their respective laws...