Why? There's no need for the citizens of the 25 countries to pay for it.
The idiots who pay for the warmongering are US and Europe themselves, thanks to the sactions, the high prices of the oil and gas, aids to UA and their stupid way of conducting the foreign policy with the rest of the world.
Putin smiles like never before.
And now the citizens of 25 countries will be able to send and receive payment to/from Russia freely, without a need to use shitty american SWIFT.