The liturgist just said that God is not, by nature, wrathful. That is clearly false in view of the OT.
That is untrue.
What I said is that since God is love (1 John 4:8) and a consuming fire (Hebrews 12:29), that the wrath of God is the experience of God’s all consuming love by those who are filled with hate, for whom the experience of such infinite love would be an extreme torture.
As far as the events of the Old Testament are concerned, if we interpret the Old Testament in a literal-historical, Antiochene manner, as opposed to reading it as Christological, typological prophecy in the manner of the Alexandrian school*, they can be seen either as manifestations of the infinite love of God experienced in a temporal way as wrath, for example, the mercy of death being provided so that we would not continue to suffer in sin eternally, and for that matter, the merciful reduction in our lifespan, and also the merciful destruction of Sodom and Gomorrah so as to spare them, in their cold-hearted evil, from further self-inflicted suffering, and/or as examples of God acting as the custodian of infant humanity as explained in Galatians 3:23-4:7
*We should I think seek to read the Old Testament using both the Alexandrian and Antiochene exegetical methods, for it is both historical literature and typological prophecy, in every event and detail. The purely Antiochene-literalist approach has been a stumbling block for many, and at the same time, excesses of Alexandrian allegorical interpretation, such as some of the more controversial writings of Origen, or the psuedepigraphical Epistle of Barnabas, drive people away from the Alexandrian method, when of course, both were relied on by the great theologians of the Christian church, such as the Cappadocian Fathers, Sts. Athanasius and Cyril, St. Severus of Antioch, Sts. Isidore, Ambrose, Augustine and Vincent of Lerins, St. Maximus the Confessor, and St. John Damascene.