Trolls just do what they do friend, enlightening, mutually beneficial spiritual discussion, isn't what floats their boat. They want to control discussion, impose their interpretation of Scripture etc, i do wonder if some of them are genuine Christians.
However, trolls are often troubled people, it's also possible there are only a couple of, or a very few, busy trolls. Doesn't take many of them to cause trouble, i have cracked up laughing when reading replies seemingly to two or three other members, who are all clearly the same troll. If you get a sense of
déjà vu too at times, i recommend clicking on the comment linked in the reply, it's often very enlightening