“And if this is all MO is, why are coed Yeshivos found exclusively and without exception, among MO Torah institutions?”
because, that’s part of the reality. it would obviously be much more ideal to have a non co-ed, Religious zionist, secular education, da’as-torah-respecting, very frum, MO etc., school. (then i might just fit in somewhere 😉 but it’s unfortunately, for now at least, unrealistic.