Hm, interesting, I had assumed he was Muslim from his Salafist beard, it says he learned the practice when he was in the Caucasus with the Muslims.
"Sukhov genuinely believes that Russian men are not meant to be monogamous. He points to the pre-Orthodox era, when it was perfectly acceptable for royals and nobles and other rich, upperclassmen to maintain multiple spouses."
"He admits that he originally decided to pursue a polygamous relationship, apparently, after spending time in the Caucasus where many Muslims practice polygamy with the authorities largely turning a blind eye to it."
Apparently the Russian Orthodox Church does not accept polygamy, so he is a heretic to them.
So he spent time with Muslims, probably Salafists, judging from his beard and polygamous lifestyle. What did they teach him, how did he get 3 wives?