If the BRICS ever agree on a BRICS currency, will that lead to the collapse of the dollar, and/or the loss of the dollar as the reserve currency?

BRICS to announce new gold-backed currency
BRICS to announce new gold-backed currency
If the BRICS ever agree on a BRICS currency, will that lead to the collapse of the dollar, and/or the loss of the dollar as the reserve currency?
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