Brave Rewards now doesn't accept my region here in Greece

Yeah, you didn’t read. Pay attention to the forum and look at your own question.

In consultation with the team at Gemini, linking/verifying (or re-linking) Brave Rewards with a Gemini account is restricted only to the following supported countries of registration,

That doesn’t say Gemini is no longer allowing accounts or stopped supporting your country, does it? It says you can’t link Brave Rewards to countries other than those listed. Yet you’re here arguing about something else entirely.

Depends how you want to take it. They have given an explanation and I’ve shared that. Yet I will agree they have been evasive, not getting into specifics. Their “official answer” is seen at Psa: updates from brave call where you can click on the YouTube link to listen or to see the summaries of different areas. Answer to your question is quoted as:

We’ve moved fast in trying to get BAT to everyone and make ourselves available in as many regions as possible. Unfortunately each government has different restrictions and we’ve encountered some pushback from that in different countries. For example, each country has different requirements for KYC/AML among other things that weren’t being met by current standards, so those regions had to be put on hold while this gets resolved.

We really want India and other countries to be able to be Verified and are working behind the scenes to do everything we need. We hope to get this resolved ASAP but there’s no timeline.

So yeah, what’s the direct answer? Did they screw up paperwork and get in trouble by governments? Is it because of fraud, such as we saw with some countries at Changes to Brave Ads Regional Availability? Is it because of sanctions like we saw with Russia and Venezuela?

There could be a million things on so many ends. All that matters is they said you’re going to wait because Brave Rewards can’t be linked in your area. That’s it. They have said it’s temporary and they are trying to figure things out on getting back, but no idea of how long it will take. This means you just can be patient. Complaining and arguing won’t bring it back faster.