There are lots of dumb people around buddy, never underestimate how stupid the average person can be when ‘promised’ riches.

If something seems top good to be true, it usually is.

Well, crypto is still in the transforming phase and we are not yet matured that enough to have that self-sustaining financial ecosystem. This is the reason why big whales and institutional investors can easily manipulate the market even without a high amount of capital. This is the reason why influencers are getting handsome amount of commission to promote crypto-based projects. However, this situation will definitely improve over the period of time along with the improvement in the mass maturity of the users.

I heard of a story about 50 Cents and his profit hiding in crypto, but I would not call it as promotion.
I also know about a local reality show star which created her own crypto, but I am not interested in this shit at all.

Actually, popular people can influence people more than you think. There are many examples of them winning elections. Remember Arnold Schwarzenegger and Donald Trump?

Of course, smart guys wouldn't fall for their lies, but the majority of people is stupid. So, educate them!

It depends what celebrity is promting the crypto curenccy,the celeb has to prove that he used thecrypto currency for his fans to believe him or  for me to believe.So i think believe the ones who showed that they used the crypto currency and that they like it,but there are a lot of celebs that whant to get payed to do a crypto currency ad.

There are all kinds of people on the planet, some adopt stuff on their own or by the recommendation of someone intelligent and who has any influence. But sadly, there are more people who would adopt something which is a trend or recommended by some celebrity. Luckily, the same people are too dumb to adopt cryptocurrencies.

Of course, it's the same as if you drink Pepsi or Coca-Cola because Messi or Ronaldo promote it, if I take one or the other is because I like its flavor, not because someone is advertising/promoting them, maybe your favorite artist is in an ICO, can call your attention and thus you make the effort to investigate a little more, but nothing else, it is always better to do our own research.

Remember bitconnect? The founder of the said coin was nothing but just a con-man dressed in suits, and a lot of people actually believe what he's saying, resulting into a lot of tears and torn wallets along the way. It is within the nature of people that when they're promised riches, they'll believe anything that anyone says, no matter how uneducated or clueless the person is. Celebs, too, knowing that they have a fanbase that will believe anything they say as long as it comes from the mouths of their idols. Having said that, it's not rare to see people believing in celebrities to make financial decisions, and crypto isn't an exception to that.

Because they could have a blind followers turned noob investors that some real traders might eat alive in the market. They also try to make them to market in the end user that might actually learn to use the projects product or service.

Celebrities are the last people you listen to. They can only say what is beneficial to someone for what they were paid. Do not take seriously their words.