You sound like my younger daughter. If I don't approve of what she does it means I don't love her, I am the bad guy. Love does not always mean approval.
The Orthodox simply do not approve of Latin ways. They see their Faith as a narrow path and not one wide enough to accommodate all sorts of things outside of the Holy Tradition.
The Orthodox approach to reunification is like that story of the Prodigal Son. They do not condemn but they will not approve either. That doesn't mean they don't love you. And if the Catholics decides to return to being Orthodox again, as the Orthodox believe they were, they will accept them. The Orthodox are just less compromising, that's all.
Look, the East was the source of all sorts of heresies and schisms in the first millennium. In fact, the Undivided Church is almost an oxymoron, because almost half of the time between the Council of Chalcedon until the Great Schism was spent in some sort of non-communion between the Constantinople and Rome!
During those times, the Latin approach was exactly the same the Orthodox take today. Rome was not willing to compromise Eastern innovations. That's why +Maximos the Confessor and +John Chrysostomos sought refuge in Rome, and that's why so many Roman Popes are Orthodox saints.
One pope, Honrouis I, a single exception in the first millennium, apparently knew of a festering heresy in Constantinople, and while he never subscribed to it, he apparently allowed it and for that he was condemned by the Sixth Council as a heretic and cursed by all subsequent popes being enthroned until much after the Great Schism.
Rome was the guardian of Orthodoxy until it got itself mixed up with Franks (who were themselves iconoclastic heretics and extreme puritans), and until Rome succumbed to Frankish demands, although not without resistance.
You yourself said it best: "If it's not jurisdictional, then it is theological, but if you eliminate both, then it is the laity, the liturgy, dispensations, anything is cited as the reason(s) why reunification is not a good option".