I don't think so, because a few types of coins are real, and maximum coins have many problems, such as difficult to sale, difficult to convert from coins to money. Personally, I just believe in real cash. Honestly,
Everyone also believes in real money, because it can be enjoyed immediately, but if you are not sure about some new coins or tokens, then you will not be in the bounty at this point, but I see you are also following the bounty now, coins actually have no problem if not created by the developer himself, because the coins that can be converted and exchanged are also made by the developer, not happen by itself.