And I couldn’t proceed further without completing it. I’ve never encountered this with other crypto casinos.

Looks like you are a small gambler (who plays with small bankroll) and only plays the in-house games of the casino. Nowadays, most of the well-known and established crypto casinos have made the level 1 KYC verification mandatory. Those are just basic information. I'm wondering how would you react if the casino team ask you to complete further steps of KYC verification! Because you aren't happy with the level 1 KYC verification requirement.