It is true that the personalities of certain individuals can influence others to take a decision ,either in investments,choice of dresses,etc.The striker's involvement in cryptocurrency will sure have a positive influence on cryptocurrency especially his fans.
this will not be effective, there are many ico who use artists or famous people as a marketing strategy. some become scams like Centra and some don't have the potential to grow. even I have observed a lot of ico like this. I prefer to look for those who use better technology and products.