But most of them are just crap ones or really has no value at all. They are created to generate income for the team members behind such project and not for the users.
Very few are really sincere in deploying their innovative technologies via blockchain technology. And you will find out that those legit ones are the ones who have difficulty in attracting investors as well as users.
So if you are one of those small time players, you need to be very careful where you put your hard-earned money. Even authentic ones do not sell in the crypto market, thus, losing your investments.