Not enough attention is given to the problem of "masit umadiach" one who attempts to seduce another person into worship of an idol.
For that is what the cults try to do in the disguise of Torah.
In Torah there is no such thing as a proposition or a mysticism being ninety-nine point nine percent right, and point one percent novelty or error. It is either all or nothing, as the stakes are simply too high for anything else. Teaching doctrines that are not of Torah in addition to Torah is just as bad and worse as not teaching Torah at all.
These obviously good and well meaning people start with half-truths.
One minor example is that the Torah teaches Monotheism, that God is One and He created the world ex-nihilo something from nothing. That is, He is not the world and the world is not Him. But the problems with the cults only start with perversions of faith. They cloak themselves with outer signs of Jewishness in order to hide their moral perversions.
And you can not walk into any place or building of their's without being infected. Their power is like that of a barnacle that attaches itself to a male crab and injects a kind of enzyme that makes it think it is a female, and thus goes and digs a hole in the sand for its eggs. But it has no eggs. But the barnacle sure does.
Better yet. Instead of avoiding the cults, destroy them. Take them out.