For the moment, Roobet is one of the only sites that you need to fill in some personal information when your register. But in the end, a lot of casinos require KYC when you want to withdraw some money (even small amounts). I have needed to complete a full KYC to withdraw 0.01 BTC.
This is a very sensitive topic. Some gamblers have no issues providing their KYC to Roobet like you since they trust them because of their proven reliability over time, but some gamblers aren't willing to provide any form of KYC regardless of whether they like the site or not.
What I truly find weird here is the requirement for you to complete full KYC for just 0.01 BTC. This doesn't really make a lot of sense.
Did they suspect you regarding something? Can you clarify?
Could be case of using VPN due to restricted country or something. Moreover, doing KYC these days is easier than going into physical casino and exposing our faces straight to the public and get recorded on CCTV.
If they asking it then it could be for internal verification about Geo location and stuff. Anyways they will have to do KYC verifications once they reach above the restricted limit of withdrawal and gambling.
There are really only few casinos now a days on whom we can trust and submit the KYC documents. I think Roobet is one of them and definitely within top 5.