He's only famous in USA. But if his reputation is expensive to him this ICO shouldn't be a scam. I think we need to watch the situation about it. Only later time we learn what it was. Is he really support this crypto or it is just a good marketing from USA. My opinion it just a scam with good marketing, but i hope to be wrong
First and foremost, Jamie is not only famous in the US and he sure do have a lot of fans worldwide. However, what is happening here is just mere advert stunts posed by cobinhood. In fact the ad stunt and the name is normally one of the reasons why I would have to read more about the coin and dig deeper on the team.
Any celebrity can be approached as long as they end up getting a benefit from it, they are business men and women too, then, it is another thing for the project to be authentic on its own. If the project flops, it is not the celebrity you will have to blame but yourself at the long run cause he will tell you straight up his reputation had nothing to do with it as he could not have been able to predict the future himself.