1.0 class lore stands just fine for the Ul'dah classes. 1.0 Pugilists were not trained by Holyfist, they were finger-and-knee-breakers working for the gambling den on the strip. 1.0 Gladiators were not a mercenary band of disciplined swords, they were legitimately-fighting-in-the-Coliseum-like-Raubahn gladiators. It's entirely reasonable that the Ossuary, inundated with adventurers as they would have been since 1.x, have changed their schooling and tutelage to be more widespread.
Think about it: A gaggle of powerful mages with power over LIFE AND DEATH would not share those secrets with the masses. The Ossuary used to be where the rich and powerful were interred. Adventurers don't give a damn about that (and it means less people take a cut of the sweet, sweet payday). The 1.0 lore works just fine if you're someone who played back then, because those legacy characters would have literally learned differently than these damn kids people starting now.
Edit:
Full stop. Black Magic didn't exist until after the Thaumaturge redesign. It's not a retcon if the thing you're talking about never existed in the first place.
Think about it: A gaggle of powerful mages with power over LIFE AND DEATH would not share those secrets with the masses. The Ossuary used to be where the rich and powerful were interred. Adventurers don't give a damn about that (and it means less people take a cut of the sweet, sweet payday). The 1.0 lore works just fine if you're someone who played back then, because those legacy characters would have literally learned differently than these damn kids people starting now.
Edit:
Quote:2) The lore team working on FFXIV now retconned most of the classes. Black Magic currently isn't really life or death magic as it was in 1.0, but it's more of a technique of using thaumaturgy that takes aether from the earth, destroying the land, and making your own magic stupidly powerful. If used incorrectly, you risk spontaneous combustion (as seen in 3.0).
Full stop. Black Magic didn't exist until after the Thaumaturge redesign. It's not a retcon if the thing you're talking about never existed in the first place.