If you check their KYC policy on the site itself, they require you to submit your docs once you reached 2000Euros of deposit. But if you are just starting to test their games and sportsbetting, and you will deposit below 2k euros, I guess, you're good to go.
I get that for testing this might be an OK limit but people these days are tired of seeing KYC everywhere, they just want to gamble and have fun without having to worry about how they can withdraw their money.
Whales will possibly avoid this casino due to that reason so maybe they should think about increasing their limits so that they can attract user since as you said many gamblers didn't like to spread their identity everywhere and possibly they will get small time gamblers who will just want to try their site so they should think about good things for betterment on this casino if they really want this to success.