Can you cite to single psak prior to the advent of Zionism as a political movement that brings the oaths as halacha l’maysa?
Benign: You should consider though, that before the advent of zionism, there was no need for a discussion halacha l’maysah, because it simply wasn’t l’maisah.
Shulchan aruch and its progeny only discuss halachos that are relevant today. I suppose you wonder why Rambam didn’t discuss it in his mishneh torah.