If the reason is because of rising interest rates, then all they'll do is hyperinflate their new currency. That isn't the reason of course and the focus on complaining about a strong dollar is weird. Its obviously because of sanctions.

That isn't to say that BRICS nations won't hyperinflate their currency and rug pull each other. I think they will and that will leave China with a new Petro-yuan being the reserve currency for those countries.

Or maybe when those countries are constantly getting rekt, they might just turn to Bitcoin. Some people learn lessons the hard way though, and some never learn at all