Actually, they did try to make an ico. When i was first using their website (when it was something new and i thought it can be something which didn't happen) they started to send emails about the token sale. But i am not sure they did an ico or not.
Also, the scam doesn't necessarily ask for an ico. They are listed on an exchange and if there is no blockchain it means they are giving false information to investors. And maybe they are dumping their coins on that exchange.
I don't want to cast negativity on JSECOIN since I am also a holder and still mining it through my blogs, but they should address all the issue about their token, and do something on the price, we need more exchange or more good platform to push the price.