Although a casino claim to be VPN friendly, it does not mean that players are allowed to change their IP to bypass the restrictions by the terms.
Good point! If by VPN-friendly the casino means you can use a VPN to bypass their restrictions then why have those restrictions in the first place?
In my experience restrictions are there usually to please the regulatory bodies. Casino itself has nothing against players using VPN unless they use in away to abuse promotions. For instance Sportsbet has geo targeted promotions and you could take part in multiple ones by changing your ip. That triggers the checks and gets you banned. As long as you are keeping it fair it usually goes fine.
In Chillistakes case we got promised here by OP that VPN will never be a problem for crypto only players. Scroll trough the thread, there is a message somewhere.