KYC is stands for "Know Your Customer" and i think this is a system that identifies the true identity of a participants. And this KYC is important in order to validate cheaters and those scammers. But sometimes it can be used also by those scammers also by pretending to have a n ICO and will ask your information for their own benefit like using your information for bad intention and this is the disadvantage of KYC system implemented.
It would be great if the development team passed kyc before running ico, then there would be less scam. It seems to me that such a rule will soon be introduced
Thats it,KYC must not only required for the investors and campaign participants instead this is must be mandatory for the Team behind every projects,they must bring their real identity so the investors has a chance to clarify many things before putting money,from this the scamming would be lessen if may not stopped