...it's their misguided interpretation of the Torah...doesn't make them any less "religious"...No different than the KKK and other groups interpreting certain passages/verses of the Bible and twisting them to suit their agenda. No different than someone cherry picking certain baseball stats while disregard the other stats in order to assert their beliefs.
...if people try hard enough, they can find a way to justify whatever they may perceive in their minds to be true...fanatics will be fanatics no matter what.