Don't forget that China is one of its founders and no decision has been made that the South Asian country will leave the group. Moreover I think that China is the driving force behind the BRICS and they are even playing an important role in all areas. Even among the countries in this organization, China is playing a leading role in all areas be it trade or investment.
By the way you should also know that the BRICS members are now operating a banking payment system with China, which actually allows them to use China's own fiat currency instead of the dollar. It is even worth noting that Iran and Brazil are already ahead in this regard, which is why they use Chinese currency when purchasing imports there.
China’s Growing Influence from BRICS ExpansionChina is the GOAT. It's one step ahead in terms of EV adoption, robotics, and even AI. Meanwhile, the US is moving one step backwards focusing on issues with little or no significance (like trying to make Canada a state, increasing tariff rates to exorbitant levels, etc). To the surprise of many, Russia's Ruble is having a strong performance. With giants such as China and Russia within the bloc, BRICS will only get bigger and stronger than ever.
I guess it's too late for the West. Especially the US. BRICS' major rival would be the EU. I'd love to see how everything unfolds with these two blocs competing against each other. And the US? It won't be long before it becomes history. Empires rise and fall, right?