I think that the BRICS is basically a formation of countries that wants to break the monopoly of the US dollar
They're basically trying to form a "global south/east" block, like the "West" (USA, UK, EU and Aus/NZ) is a block, who bullies the rest of the world and wages wars non-stop. If one can weaken the Dollar hegemony, they can become competitive. But these countries are very diverse in thinking and alliance: for instance India, they are a big buddy of the USA and hate China (they have a war being waged with knives, ongoing on their border).
When BRICS was only 5 countries, nothing much has happened, but they are slowly trying to make themselves an economic group.
Hence the New Development Bank (headed by Dilma Rousseff) to be like an IMF and World Bank but for BRICS (the IMF and World Bank essentially cause political coups and keep the "global south" poor: with coup d'etats and bribes to export these nations' wealth to the political elites in the west, by paying off one political family in said country to play ball. So one group of politicians in the US get rich, and one family in said global south country gets rich. Everyone else stays poor.
Obviously this kind of behaviour will also happen among BRICS nations, let's not kid ourselves.
Hence, we need to get the populace excited about Bitcoin and the new financial system instead.