You need to re-read my post. I point out that Carbuncle was only an avatar of light in 1 game, and it wasn't even a main numbered title. FFXII: Revanant Wings is the ONLY FF GAME WHERE CARBUNCLE IS RELATED TO THE LIGHT ELEMENT. She is normally a NON-ELEMENTAL summon. Once again, you are wrong. Also, in THIS GAME, Arcanist has nothing to do with dark magic.
Also, there is only 1 other FF game where the Arcanist class/job is present, and that is FFTA2. In that game they get Syphon and Drain (which we have combined into 1 spell), Shadow Flare (which we have), Haste (which Scholars get through Spell and Skill speed increases), Death, Dark and Gravity Magic. So they get 2 dark magic spells (Dark and Shadow Flare). Of those 2, we get 1 of the spells. Very similar to what we are now.
Wait, I just saw your post up there. You are using FFX-2 as a reference. That game is so widely disregarded by the fan base, it should NEVER be used to prove a point. If you wanted to use that as an example though, look through the abilities list for Aracana. It is mostly status inducing and non-elemental damage abilities. They do get Darkness, but that is a traditional Dark Knight ability, more than a Black Magic ability.
If we are discussing Arcane Magick, I find it funny you leave out its presence in FFT, where Ultima (who has always been considered non-elemental) uses it. It is not related to dark magic in that game either. In the international version of XII, Arcane Magic was basically a mix of Time and Status Effect magic.
If you want to take definitions of words to determine what classes should do, Conjurer shouldn't use healing magic either. Conjury has nothing to do with healing. It is the magic associated with creating something out of nothing.
Hell, Thuamaturgy is actually the art of working miracles, or healing. The Judaic Saints are called Thaumaturgists.
Also, I guarantee you I know more about the FF series than you do. I have beat every game in the series 100% at least 6 times. Tactics, VI, IV, V and VIII I've beat 20+ times. I always do everything available in all the games, including maxing out my characters. In Tactics, I had all named characters maxed on all jobs. In FFX, I completely maxed out every characters sphere grids. In IX I was King of Jump Rope and obtained "Would you like to discard this card" rank in Tetra Master. In VII got Aerith's final limit break before she died the first time I played. In VIII, I beat Omega Weapon with The End (basically killed him in 1 hit). I've beat Xenogears 100+ times (I think it should count since this was the original script for FFVII, but they thought it was too dark for a FF game and was made its own thing).
Before Square lost 90% of the staff that made the company amazing, they were my favorite game company. They are finally getting back to what made the series great with this game. FFXIV:ARR is the closest thing Square has released to a real FF game in years. You sir, are wrong.
Also, what does join date have to do with anything? It just means I didn't play Version 1.