Sounds like a scam to me, based on what little I know of these bands (that Crypt of Kerberos played a gig with Beherit, among others) and from a quick perusal of their available lyrics now. If some of the members happened to hang out with Christians, it sure doesn't seem to have overtaken the entire aesthetic expression of these bands, thus the topic amounts to no much more than gossip about those people's private lives.