https://onepeterfive.com/left-orthodoxy-regret/
I was looking for commentary on the 1 Epistle of St Peter, specifically chapter 5, but came across this article which was posted a few days ago, which makes sense why it came up in search results based on the website name. Out of curiousity with the title, I read it.
I was confused by this part as to what he means:
The Roman primacy is instituted by God
During my time as an Eastern Orthodox Christian, I came to realize how much my view of Rome was obscured by my own pride. The central claim of many Orthodox — that Vatican I is a heresy of self-aggrandizement — does not hold up to scrutiny. Not only do the Orthodox Latin saints preach this doctrine over a span of centuries, but at one point, the entire Eastern hierarchy promised to be in agreement with the Holy See and confessed the Roman primacy (this was the Formula of Hormisdas). What Orthodox fail to see is that over the course of the 464 years from Constantine to the Seventh Ecumenical Council, the eastern bishops were heretical and out of communion with Rome for at least 203 years [1]. Meanwhile, their Eastern saints who were orthodox confessed the Roman primacy: St. Athanasius the Great, St. John Chrysostom, St. Cyril, St. Flavian, the Blessed Theodoret, St. Maximus the Confessor, St. Theodore of the Studium, et cetera.Thus in order to assert, as Orthodox do, that the Roman primacy is a heresy, they need to admit that their own saints are heretics, or else claim — as they are forced to — that their saints were sycophant men given over to hyperbole and flattery.
I'm also unaware of what he's referring to in his fourth point, "The pathology against charity" specifically about Ss. Photios and Gregory Palamas:
Let us consider one final example: “Our All-Holy, Immaculate, Most Blessed and Glorious Lady, the Theotokos and ever virgin Mary” [13]. In considering the Immaculate Conception, the eminent Russian theologian Fr. Sergei Bulgakov states emphatically that “[t]he Orthodox Church does not accept the Dogma of the Immaculate Conception of the Virgin” [14]. What is meant by “The Church does not accept?” On what grounds? Was there a universal declaration about this dogma from the Orthodox Church? This statement is a fantasy.
The more objective Met. Kallistos Ware is able to admit that “in the past individual Orthodox have made statements which, if not definitely affirming the doctrine of the Immaculate Conception, at any rate approached close to it; but since 1854 [when Rome dogmatized it] the great majority of Orthodox have rejected the doctrine” [15]. A close look at the sources shows that some of Chalcedonians’ most revered saints — Photius and Palamas — in fact taught the Immaculate Conception [16]. Thus the anti-Roman pathology twists their doctrine to the point of even committing one of the blasphemies against the Immaculate Heart, for which we make reparation on the First Saturdays.