Justified? Nope. Was it that OP? A huge maybe if you have ALL the various equipment (Luciferi Pyktis extra hit + Saint Oath + Swift Ark etc, anyone?) needed and there are enemies that let you auto-attack for the full 30 seconds (everyone knew Cleric melee auto-attack is an impractical and flawed playestyle), and only in a bossing situation (melee auto-attack isn’t suited for mobbing). Not many classes can benefit from Goddess Armor and Chaplain can finally benefit from Saint Oath, along with Magnus Exorcismus changing from 10s into 15s being a huge buff, but eh … wish they could’ve done more. How is it compared to other classes? Strong enough to pull its own weight assuming the aforementioned circumstances, but IMO Chaplain’s Binatio + Needing Zemyna/Swift Ark interferes with your two other class choices.
My initial ideas (I believe other players had similar ideas on this) of Chaplain buffs were to increase damage, range, and give a mechanic to allow stacking auto-attack damage when not attacking and releasing it on the next auto-attack you land on enemies (IMC sucks at balancing low/no cooldown damage sources). They went all in on damage to make up for the other two, but now that they nerfed the damage, I would’ve hoped that IMC do something about giving it range or such a mechanic.
AKA Nope, I don’t think Chaplain deserved those nerfs, but in the first place, I never thought that forcing SFR buffs into classes IMC said can’t be fixed by merely increasing SFR, would change anything anyway.