Dr Kelley Ross tends to divide between systems that are based on a dichotomy between good and evil as opposed to systems which think of evil as non existent.

If you look at Dr Kelley Ross he tends to divide between systems that  are based on a dichotomy between good and evil as opposed to systems which think of evil as non existent.

My own impression of this is that in fact there is a struggle between good and evil, but the apparent difficulty with this is when evil disguises itself as good.

Much of what passes as legitimate Torah is part of a general phenomenon of Satanic teachings getting into the realm of Holiness.

[I probably should expand on this theme a drop. My basic point that I intended to get to was that by trying to avoid the Sitra Achra [the Realm of Darkness] the effect is most often to fall into something a million times worse. Something that mimics the Realm of Holiness in outside rituals and appearance but is actually the very core of the Sitra Achra. That was just one point I wanted to bring up. But there are many more side issues.

The simplest thing would have been to trust the judgement of the Gra and thus be saved from the problem without having to realize how right he was after years of wasted time and much damage to one's soul and family.