(1)(The main thing is not to affix blame on anyone but rather to work on self improvement and to stay away from evil people that will harm you and your family if given half a chance. This is part of the Mizvah of not saying Lashon Hara which comes in the same place in the Torah along with the mizvah do not stand by the blood of your neighbor. That is there is an obligation to warn people about dangerous people-which means mainly religious teachers whom I find to be highly dangerous for marriage and families.]
(4) [When the Rambam Maimonides refers to Physics and Metaphysics he says he is talking about these subjects as understood by the ancient Greeks.] My opinion about it is it would include Kant and Hegel.
My impression always was there is a big difference between authentic Torah at Lithuanian yeshivas,- and the false Torah of the Sitra Achra of the religious world. [Reb Nachman did warn about religious teachers an considered them as a rule to be quite evil. His term for them was "Torah scholars that are demons תלמידי חכמים שדים יהודים" This sounds harsh but in fact seem like an accurate description of the vast majority of them.]. The main difference is that the ultra religious world makes up tons of rituals which have nothing to do with Torah and they claim it is Torah. The Lithuanian world tends to focus on what the Torah actually requires.