This would require a more detailed knowledge of the regulations. Here in Europe, KYC documents (and trading activities, for example) must be stored for 7 years so that the data is still available in the event of a crime. In this case, you do not have the right to insist on the deletion of your data.
I assume, however, that such regulations are very similar worldwide and will therefore also apply to Roobet in a similar form. The only possibility as an end user if you do not want this is not to use the offered service (exchange, gambling platform, ...) and to switch to alternatives that do not require KYC.
Well, then come to India, things are even worst here. It is illegal to do gambling in this country and there is no need to do KYC because we don't really have gambling sites here.
Casino's like Roobet has given us pretty good expansion and so I wouldn't mind doing my KYC here. I have already done it and so far I am comfortable with it.
I feel good about these Crypto currency based casino's for this one reason, they are virtually anonymous.

I don't think a casino with billion bets would ever break the trust of their customers.
I hope India does better with pandemic as well, I hear on TV and youtube and news that India is not doing good right now on pandemic and I hope that will get better. KYC on the other hand is a doom to many other nations, USA, many EU nations, almost every single middle east, few African nations (rest not allow it, just don't have law about it) and a few Asian ones we all know as well.
It is basically a way of saying "if you want to gamble here, do something illegal, and also give your information so that when you get caught we can give all your information to government so you can be jailed" and that is what people are going against. The "voluntary" KYC is understandable, if you win a lot of money here and they ask for your KYC and you do not give them that is optional and you may end up giving them your KYC as well if you want, but if you are asked even without gambling that has been a problem and been talked for like 10+ pages now.