Geomancer

[Seraphor]

Again, you're making a subjective argument. I wouldn't call it any more similar than any other mage job myself. You're using your personal feelings as evidence for what should happen, and then balking at the same thing being done by someone else. If you're allowed to say they're too similar then I'm allowed to say they aren't. If you want to try and turn it into something objective then feel free, but if so then I'll go back to pointing out similarities to other jobs and quickly it'll turn into a subjective argument again. At the end of the day there isn't any objective reason that Geomancer would play the same as White Mage, that it would hit the same themes as White Mage, or any number of similar arguments. Subjectively you may feel it's the same, but ultimately you need to acknowledge that as simply personal feeling, no more or less valid than anyone else on the matter.

But it's not strictly 'subjective'.
It may not be black and white, or binary, there are degrees of similarity with which to work with and judge against each other.
And if their process of choosing jobs allows for that degree of similarity, then that's fine.
But everything we know of their dev process shows that they avoid jobs being too similar to each other, that they try to give each job a unique weapon, unique lore, etc. THAT part is subjective. Yes they are similar, not so subjective. That this similarity is a problem, that could be subjective.

Yes, there's no reason why WHM and GEO would play the same, they could have totally different job mechanics, but going by the establish Geomancer lore that they've put in the game so far, they would still end up using Earth, Wind and Water spells, which as far as job fantasy goes, is very similar to Conjury.

We are making a judgement by saying that similarity is too close for them to consider making it a healer, based on what we understand of Yoshi's team and their work.
We could be wrong, but I don't believe so. It's an opinion.