MTAB,
1. You are right. Chareiidi is a new religion. For one thing, full-time life-long learning was never for more than a small elite. This is the resolution of he famous disagreement between Rashbi and Rav Yismael. This is already changing because a mass of non-workers cannot be supported.
2. David HaMelech also used weapons. What do you make of Shmuel Bet 1:18? Tell me,do you do hishtadlut for other things, like parnassa?
3. One can even be motzi shem ra on a land as were the spies.
4. We do not hold by the Brisker Rav but like Rav Kook, his son and continuation Rav Tziv Yehuda and a long list of gedolim who supported the establishment of the State.
Joseph, according to what I heard Rav Chaim was referring to someone who suddenly realized that he forgot his hat. This made him so flustered that he would not have been able to daven properly.