I do not think that 80% of ICOs are scams. You need to analyze them first before joining an ICO. And, not all ICOs will succeed. Therefore, you have to be wise while choosing your own ICOs in order to invest. There are many fail ICOs out there and people keep saying that they are scammers. That is wrong. Fail does not mean they are scammers
Conducting KYC makes crypto-currencies and ICOs more legal. And the day approaches when they will be accepted by the whole world and equal in importance to securities. Therefore, one has to understand this procedure with understanding, since the benefits from it are obvious.
