I am now following this project. Read the whitepaper (May 2018 version), verified the team, read their patents, appreciated their government connections and presence in China and Korea IoT and Blockchain industry, their vision, careful planning, modesty and seriousness. This is all very impressive, unlike most (any?) other project I have investigated.

I am really dumbfounded with people still calling them scam or "pie in the sky"
Since I have not read any piece of evidence, the easiest explanation is that they are probably investors in [supposedly] competitor projects. But that's just how it is in crypto, a nascent industry.

Feeling solid and comfy here. cheers!