So actually it will be difficult for people like us to tell which project is really good, because the point is only the core team of each project can tell it.

The point is, that we all know, most of whitepaper just telling us about "Blockchain will synchronize with their products" but they don't explain how to do that. If it's just making apps and things like that then what changes can be obtained ?
Do you think just for built an apps, make new exchange, new network, can we call this "they need blockchain" ? I don't think so, they abuse and explot the blockchain