DJ Khaled and Mayweather had an issue about shilling an ICO. And other celebrities hyping or promoting scam coins. Who would actually rely on their words? If you're listening to celebs then you are not ready for this type of market at all.
In our everyday lives, people use products that celebrities promote, promoting coins/icos/tokens is no different from it, they get paid to do shilling it's you who needs to do due diligence.