I don't doubt you believe Yuna is an example of a White Mage, but until you can find an actual quote from the game, I don't think "because in lore she is addressed as a WHITE MAGE no assumptions needed" is at all accurate nor that she should be considered a White Mage, especially since any of the characters in the game can pick up her skills eventually.
And, again, I gave you lists of the other explicit White Mages in the game's history, you can't just ignore that. Even if we point out Eiko (not Garnet) is a bit more White Mage, Eiko and Garnet are from the Village of Summoners, not the Village of White Mages, so they're both technically Summoners as well. "the facts" are that FFXIV is pretty true to the Final Fantasy lore White Mage, and more strictly accurate as a representative of it than the Summoner-hybrids, not all of which even WERE White Mages (Rydia from FF4 being a Summoner+Black Mage)
FF11 is an apples-to-apples comparison, as it is also a MMO, and in it, WHM is almost exclusively healing/buffing in party content, rarely using any damage spells.
It may not be objectively good design, but it's not objectively BAD design, either. I played Holy Paladin in Burning Crusade WoW, and its DPS rotation was literally one button, Judgement. This isn't exactly uncommon.
"some people" isn't a fallacy of appealing to a majority (some is not most; "most people" would be said fallacy, which is why I avoid saying it, something not true of everyone in this forum who often invoke that they're speaking for the majority)
This would be true if I hadn't mentioned FF11, which is an MMO... In fact, FF11's WHM to FF14's WHM is the most apples-to-apples comparison we could look for.
Kimhari's starting point can probably best be thought of as Red Mage, I think. His special abilities are absolutely Blue Mage, yeah, but his grid places him within close reach of White and Black Magics, even if it still kinda sucks.
lol, fair enough.