How exactly? They still have the gas and Europe has no fertiliser or heat.
Eventually mainstream economists will realise that you only export to import and that imports are a real benefit whereas exports are a real cost.
To win in international trade you want as many imports for as few exports as possible.
If Russia isn’t importing anything then it has no need to export at all.
There are plenty of jobs going making armaments and equipment for the Russian war machine, so nobody in Russia is going to be short of a job either.
Russia has no need of the West’s money. It has its own and can ensure people need to obtain it by imposing the necessary level of taxation.
Which if you don’t pay in roubles gets you a stretch in the gulag.
It really is time for some people to re-read Keynes’s “How to pay for the war”