KYC verification has become a big problem for investors in ICO projects, but it has become an even bigger problem for participants in the ICO bounty campaigns. Most KYC checks are carried out after the end of the ICO, when bounty hunters are no longer able to refuse to participate. After all, they have done the agreed work and are just waiting for the deserved payment by tokens. Here, KYC verification already serves as a form of fraud in order not to pay the tokens earned by us.
As for the possibility of using our data by terrorists, this, of course, is not excluded. However, I do not think that the probability is high. There are not so many terrorists using cryptocurrency in the world, in any case, not anonymous types of it.