HaKatan:
1) It’s fine. Do learn some Arabic. If not, read Risaala Al-Yemeniyya with a reliable translation. The Arabic and Hebrew are slightly different and the context and position of the Oaths therein, as well as their use, is important. It’s not pratical Halacha there, it’s a rhetorical device. The Qafih (Hebrew) edition is best.
2) I didn’t question whether the various authorities quote them. That was never a doubt.
3) For the millionth and final time, I questioned: (a) the practical Halachik applicability of the Oaths, considering (1) Halachik methodologies and approaches to Halacha vs. Aggada, (2) the context of Ashkenaz vs. Sephard, Edot HaMizrach and Teimanim and (3) the very different reality we live in where there is a Jewish state in existence as opposed to the past where this wasn’t even our ancestors’ foggiest dreams; (b) R Teitelbaum’s authority to issue his ruling considering the factured state of Halacha and our (Jewish) legal system, and (c) the supposedly binding nature of such ruling outside his community.
You’d be surprised to learn that you and I probably agree on more than we disagree. Which is the case with most Charedim, Datiim and MO.