Stake is in compliance with Curaçao gambling regulations and they are the ones who decide the list of prohibited countries. Stake can only enforce those regulations not change them or else they lose their compliance.
Well you can still play through a VPN and it also allows you to play some of the Slots that are blocked if you are on their "restricted country" list. Do not verify your account to get access to bigger rewards if you are from a restricted country, because your account will be blocked.
Some of the countries on that "restricted list" is so unenforceable .....but that is a discussion for another day. Some people just play on the site for entertainment and they do not care about these restrictions.... but you are f$%^ked if you win big. (The Casino will use it as a loophole not to pay you.)