Nilotic
VIP
It depends on if Germany takes Gazprom to court as their legal agreement is quite clear on the payment methods.
Furthermore, Putin has not really outlined a plan for how Germany et al. should be paying for their gas and when the transition is supposed to occur etc.
So as for now, there is foreseeable possibility for rouble payments for gas unless Germany and it’s European allies agree to do so.
Russia is unlikely to put any stock into court rulings if it has essentially been cut-off from international trade; Russia is under what amounts to an embargo if it can't even use the dollars or Euros it receives for its gas.
Germany and the rest of Europe has little in the way of choice but to compromise with Russia because this is not sustainable -- at least not in the immediate term.
Russia is also an essential source of critical minerals and it may also extend its Ruble request to them as well.