There are also bounties as well that do not inform the bounty participants beforehand if they require it or not to get the tokens and it is disappointing because some just do not want to send their personal information and end up not being compensated for the work they have done. There are many bounties nowadays who are informing though so it would be up to participant if they would be willing to participate in and have KYC or not. Regarding exchanges, I end up submitting my info to Bittrex because there are coins that are only tradeable in their platform so I have no choice.