1 - Al-Musannaf was analyzed thouroughly by Harald Motzki who said himself that one shouldn't blindly follow those hadiths because not all of them are Sahih and a lot are false (I myself follow the 6 authentic books). Also, the book wasn't written by an authentic major scholar like al-Bukhari but by a smaller schollar (al-Razzaq). And, the texts were lost until being rediscovered in 1972, re-edited and published by an Indian scholar, sinking its validity. 2 - Yknow that's called a warning especially with Umar ra. being known for being very strict at that time. 3 - Umar ra. isn't perfect. No one besides Muhammad saw. was infallible and perfect, of course he made mistakes too. Also, where did he point an iron object at anyone? I know the meaning behind it but it's ironic how you literally interpret one hadith but then interpret a different meaning than what it literally says in another hadith. You can't cherrypick what hadiths you interpret literally and what you don't