I understand the importance of KYC verification to be carried out by casinos, but since the introduction of use of cryptocurrency in gambling by online casinos and other betting services, does KYC verification from online casinos and sport betting services not directly go against the anonymity that cryptocurrency seeks to provide to people? Does it mean that gambling online anonymously is no longer possible?
There are some blockchain gambling site that are existing. Just like there are centralized exchanges, that does not mean there are not decentralized exchanges, so in gambling too.
As long as you are using a centralized gambling site, they may request for KYC from you. I have not committed any crime, I am not a money launderer and I am not in support of any terrorism or online crime activity, the reason I played on those gambling sites. As long as they provide the services I want, that is all that matters, the reason people are using them. Not that is have huge amount there, so I do not consider not having privacy while making use of such gambling sites. I was once on many fiat based gambling sites before.
Mind this, crypto is not for anonymous payment, only few like monero, some means of transactions of litecoin, dash and zcash, including some other privacy cryptocurrencies are used for anonymous transactions.