One can understand that an ICO team that raises millions of dollars in ETH and exchange those ETH for fiat money to send it to a bank account will need to explain where that money come from and that for that reason they ask big contributors for their KYC documents. However, many times the collection and storage process of that data is not clear enough, especially in cases in which the ICO team delegates this process in a third party, which is not necessarily a well-known and reputable actor.