Eph 1:10 clearly uses the term oikonomia in the broader sense of “economy.” There really is little doubt of that.
The reality of separate periods of time revealed in the Bible’s survey of religious history cannot be denied.
Am I the one who’s being stubborn here???
Nope. Earlier systematicians and theologians had no hesitation in using “dispensation” to describe the differing stewardship-arrangements that are undeniable in Scripture. It’s only now, with the deadly-earnest commitment to preserve an unbiblical tradition against its Biblical challenger, that scoffers shrink from its use.
The irony: dispensations are not the distinguishing aspect of dispensationalism, any more than the rapture. ALL CHRISTIANS affirm dispensations, as ALL CHRISTIANS affirm the rapture.