KYC is not really good for some people, it may because they are underage or to avoid any requirements to be a gambler. It could be also because some of KYC proccess is not easy as it seems. Some of the proccess takes too long time, and people don't have enough patience to wait for approvement. In my opinion, KYC proccess is not that necessary for gambler because most of gambler must be feeling safer to be unknown.
kyc is good to me and I don't really know why we want to hide our identity. As a gambler it is very important we reveal our identity because it is very possible to make huge amounts of money and if it an evil person that win through anonymous the fund can be channel for evils things that will be a harm to all of us.
For people who are from countries where gambling is prohibited, keeping their anonymity is essential. I am not saying that they are doing the right thing but, this is the reason why most people avoid casinos where KYC is required. Moreover, our identity and related information are never safe with entities such as online casinos and ICOs. For me, avoiding them is the best way to keep myself away from different problems like this.