As far as my experience is in following the bounty, I see a project that requires submit KYC or not.
So, I knew from the beginning which projects were asking for KYC which wasn't. So from the start, we can choose which projects we want to follow, if indeed we don't want to take part in the ICO project that asks for KYC.
If there is a project that changes the rules after we work, then it is indeed cheating. But thankfully I have never found an ICO like that.