In history religion was a fundamental tool of statecraft. It is only in the last hundred or so years that this was idea was discarded, mainly because the new ideologies, such as materialist atheism, need morally weak populace in order to function. Communism was an abject failure because it is soulless, brutal and inefficient. Well before the collapse of the Soviet Union, probably soon after Stalin's death, this problem was recognized internally. The Soviet (Russian) Empire was failing because Russia was killing itself off through abortion and a total lack of meritocracy. China is not failing as quickly but it too is recognizing these problems gradually.
Today, the West is in the same boat, with an increasingly soulless, brutal and inefficient financial and political system, and a decline in meritocracy. As the Western world discards Catholicism and embraces a dumbed down, artificial morality, it guarantees its own failure and decline, regardless of current military supremacy.
Putin seems to have been part of the group within Russia that recognized the weaknesses of the old regime and has identified Russia's cultural strengths. He needs Russia to find religion once again because policing alone doesn't work in getting people to do an honest day's work and have faith that the fruits of their labor will be passed on to their children. Also, the West is poisoning its youth with porn, drugs and creeping ʝʊdɛօ-Americanism.
The Russian Orthodox Church is not like Catholicism. Many (and possibly all) of its bishops and priests have invalid orders because of the historic link with the KGB. How can orders be valid when the heart of the seminarian is already wedded to Satan? Since all of this was and continues to be a secret part of history, there is no way of knowing the extent of the problem or if anything has changed in the last two decades.
However, Putin's support for Christianity is a good thing. It may lay the groundwork for the "Conversion of Russia", but I wouldn't hold my breath!