“It’s not because they hate the US.”
I don’t think selling Treasuries or pulling away from the Dollar as a Reserve Currency means a country “hates the US”.
Do you?
They're not going to establish a new reserve currency. The banksters won't allow it.
Besides, anyone thinking BRICS and their cohorts would be successful at it when they're all simply factory nations - at best - doesn't understand international trade settlement. Everybody, and I mean everybody, is clamoring for Eurodollars (US dollars in the foreign markets). There just isn't any to easily be had.