@ HaKatan
You wrote: “…which is also brought down by poskim on the spot there and elsewhere.”
Which Poskim bring it “on the spot”? Citation please.
You wrote: we anyways pasken like the oaths, as per all the poskim that bring those as halacha
which Poskim? Since you claim that “all the Gedolim” agree with the Satmar Rav and the Brisker Rav you should have no problem citing their Halachic works where the 3 oaths are brought.
You wrote: including the Rambam himself in Iggeres Teiman.
The Rambam writes that the Mishna Torah contains all the Dinim of Torah sh’baal pe. The 3 Oaths are not there. Let that sink in.
Avi K wrote: Rambam does not pasken them in Mishna Torah. Neither do any of the Rishonim, Shulchan Aruchm Rema, and Achronim. You wrote: You are left with an academic question as to why it’s not in other sefarim too. The Satmar Rav and others addressed that academic question, which is otherwise irrelevant.
It is not merely an academic question and certainly not irrelevant. Omission from every major Halachic Code From the Rif through the Shulchan Aruch sets Halachic Precedent. To refer to this as academic and irrelevant is, in technical parlance, a big halachic boo boo. Now, it may be that the Satmar Rav addresses this objection. Have you read how he does this? Perhaps you would care to post an executive summary for us simple folk here in the CR?