To be fair Russians have enough natural resources to back up any currency they want.
They need an acceptance from broader set of countries now.
Russia bring energy and other critical natural resources on the table in this currency.
China brings Technology, manufacturing and the biggest market on the table.
India bring produce, man power and second biggest market on the table.
Brazil brings natural resources to the table.
South Africa bring precious natural resources to the table.
Rest of the gang give wider acceptance to the currency and its associated payment method.
With more than 30 Trillion dollars worth of nominal GDP and possibly 60 Trillion in purchasing power parity of these countries (global south) together is approximately half nominally and same in terms of purchasing power parity that of North America+Western Europe+Japan+South Korea+Australia put together.
Thats a lot of trading and payment opportunities.
They do not need to agree on everything, just have a currency and payment system that white-house can not control. Having many power centres means domination by a single country will not as hard as what US has.
Its simple. Just because US thinks Cuba is bad does not means rest of the world should not be able to trade with Cuba.
Dollar and SWIFT is too political and one country has too much power over it.
In a political point of view, yes, this should be the case, but in the economic point of view, well, this is not how economist see things.
While I will agree the Russian had enough resource to back their own currency, however, those resource is nothing unless you can find a way to turn into their currency, they can't spend oil and gas as their denomination in Russia. Which mean you need both
a market and a
inflow of capital. The issue here is, both can't sustain their economic after the EU basically unplugged from Russia which they will need to seek 40% alternative market. And most country, even close allies such as India and China have no confident in Rouble, which is why both countries are asking to settle their transaction with either Forex (whatever left in Russia) and/or their own currency.
The result is even with vast resource, their effort is still inadequate to contain their inflation, cash rate at 21% is virtually unheard of in any advance economy, that's almost a quarter of the interest given, which you are going to have to pay either way, not now, but sometime down the road, those interest will then translate to inflation itself when it pay off, because you are getting 21% more money every year as interest accumulate (That's why interest seldom goes over 5% as it has to align with inflation value), that is very extreme to stem capital flow. The thing is, you can't put a tourniquet to the currency for long because the same as you apply a tourniquet to your limb, you put there long enough and you are going to lose that limp. Which by then they either need to have either a bailout from one or more country from the global south, or you are going to hit an unstainable inflation rate and nobody can afford anything domestically.
Politically, yes, if the Russian form a tight group with China, India and Global South, they can sustain their economic ecosystem with some adjustment, but the issue is, can or will they make those adjustment, that's another question, you still need to be able to sustain it economically..