This means that all these blocked casinos have to agree and sign the agreement that Brazil has set. And the impact that gambling with online casinos made on its citizen is also alarming on their end. But at the same time, they'll still give time to these casinos to comply and agree to the regulations they have set if they're also trying to combat fraud, money laundering, and other sources of dirty money. It won't be surprising if sooner or later, they're also going to be strict with the terms and conditions that they'll set for the exchanges.
Honestly, if Brazil is facing the same hardship like my country I can bet with anyone that the citizens already find their ways around, there are smart people in Brazil as well, they can just find another online casino that's based in a far distance and use VPN to keep gambling.
That is true and pretty much everyone can do that. But the casinos will ask for KYC and if they're from Brazil, they might just want these users to stop using them and get their money asap within the limited time that they'll give.