Most ICO scams use identifiers as well as fake addresses, so it is very difficult to find them to be punished. ICOs are not scam, they must comply with legal regulations in some areas.
at least we can take part in the ICO project which in that country must do a KYC especially for the teams that hold the ICO, to be safer and can guarantee that the ICO is official and has obtained permission from the government
KYC is not necessarily a guarantee that a project will not end up as a scam. Although as it is, KYC for the team or will I say in this case KYT(Know Your Team) is something that the likes of ICOBench has been doing on their platform to verify the team identity and make the investors more confident on at least investing in the project. Scammers on the other hand will never reveal their true identity as that is certain.
It is more like you going against the law and then pronouncing to the whole world your identity, and in that case, it would be like you trying out all means to find yourself locked up. The best thing is for people to try as much as possible to know how to avoid scam themselves.