For me it is clear cheating, because first - in such way they will cut the number of rewards, second - they will collect your data. If they are acting in such way, they easily can continue their cheating. Or for example - sell their database. Anyway i am trying to stay away from such bad players.
It doesn't cheating! How can you say it cheating ?
As well as i know,Whenever you follow a bounty program it means you agree that there will be a rule will change sometime.
Maybe they change the rules and make decision about kyc is to avoid cheaters from bounty campaign.
Because too many cheaters make so much account to get high paid.