Wishing that something were true, doesn't make it so.
Regrettably, the Orthodox Church in Russia has had no social significance since Tsarist days. During the Soviet period, it was thoroughly infiltrated by the KGB.
Today, in the post-Soviet gangster period, it's little more than an ornament. Putin went there for Yeltsin's funeral to give the affair a bit of dignity and decorum.

Unfortunately your perception of the ROC is painfully out of kilter with reality. The sad fact is that the ROC is today stronger than any single organization in Russia, which is why much of the potential for Russia's future direction stems from the Church's role in positioning Russian people towards believing in God and in themselves. The new Cathedral in Tallinn will galvanize much of the ideology now being planned to mobilize Russians throughout the Post-Soviet Union to help rake out the rot that has set in as a result of misguided Capitalism, a Western morality that has lost its bearings completely, and a rejuvenation of Russian culture and lifestyle to its former glory. No small task, but in the East they take the challenge seriously.