As long as there is a value and demand, we should consider the token as productive. Why? Is is too obvious that a token that has price is surely existing product because at first there was no price if it not productive product. So looking at the top altcoins we can conclude everything is fine. Altcoins are not dead, but we cant deny the fact most are getting failure and scam. But dont be so bad about that even in fiat world there are scams and failed company. Just be open minded