Joseph, about your point
“C) One time this wayward movement posed a danger to Torah Orthodoxy, and Rabbonim condemned it in no uncertain terms. That threat has mostly subsided, with Bnei Torah today not taking the MO seriously anymore. Gedolei Yisroel have and continue to plead with them to return to the fold, and await their return with open arms. Baruch Hashem they have notably moved to the right in recent decades.”
“Return to the fold” means they are no longer considered frum yidden. Historically, the standard for being considered Orthodox has been eating kosher and being Shomer Shabbos, whether or not someone is midakdek in other mitzvos and whether or not they hyphenate their Orthodoxy. As long as you kept Shabbos, you were entitled to an aliyah in shul, no matter how your hyphenated your Orthodoxy, no matter how much you elevated your am haaratzus into a mitzvah, etc. While a movement dedicated to lionizing hisrashlus bemitzvos is not an ideal Torah movement, “out of the fold” is a tad exaggerated, wouldn’t you say?
Furthermore, in the previous thread you were maskim that Rav YB Soloveitchik ZT”L was NOT really Modern Orthodox, and that he upheld Orthodox views (eg women dancing with Torahs, women’s krias Hatorah, etc). Are you changing that now?