Kiril probably doesn't even know it's happening. Or if he does will, like Putin, claim the reports are Western lies. Either way he will not care.
How did he survive the USSR to become Patriarch of the Russian Orthodox Church? He was one of the ROC's representatives to the World Council of Churches, and reported it and any other potentially useful information about it and its people, to the KGB.
@Yulianna Indeed. He know what's good for him in his position, and the two have been supporting each other since Putin became President.
Sometimes I wonder what Putin would do if Kiril turned round one day and decided to become a Christian in word and deed instead of just title and litany.