Actually, KYC is not a big deal anymore I guess. Day by day scammers and spammers are increasing incredibly in ICO project. That's why ICO projects is trying to find out those scammers, This is just my opinion though, Besides this, There are some rules about it like If someone want to participate in ICO who lies in European resident then he must do KYC.
That is definitely not a reason.
Few countries have banned ICO's and with KYC it is easy to check if participant is from restricted countries. All other reasons are nonsense.
and when the team from the ICO after ICO runs away and sells the data? And then buy weapons or drugs with your ID card. And two days later the police will ring the bell? What do you do then ? Big eyes ??
Can you explain how to buy drugs with ID card? Drug dealers are asking for ID verification or something?
Your ID can be abused in many ways but not for buying drugs or weapons. I have never heard drug dealers or illegal weapon seller are asking for ID's , their business is already illegal.