I agree with the idea of 'preserving mystery', but the problem lies specifically with aether. Aether is the 'science' of FFXIV. It follows very clear cut rules and has researchers who engage with it using scientific principles. It's no coincidence that the two societies most invested in aetheric research, Sharlayan and Amaurot, are rooted in a Greco-Roman tradition, much like our own society. The problem that we've hit in the lore is that in tying everything back to Amaurot, we've also tied it mostly back to aetheric principles with predictable rules and outcomes that don't allow for mystery. And you're right, the world is all the more sterile for it.

But this is not about tying the Auspices to aether - it's the opposite.

Dynamis, or Akasha, is a fascinating counterpoint to all this. I suspect the reason why a few people struggle with it so much is because of they view it through the lens of a Western cultural bias. Akasha is the Sanskrit equivalent of the Greek Aether. It's rooted in Eastern mysticism and spirituality. It's the passion to your thought. It's interesting that you use the phrase 'out of place', because it is very much the 'other' to aether. But the worldbuilding possibilities are all the more richer for its inclusion.

It may be that Dynamis is just a once-off lore quirk that only applies to outer space and flowers (unlikely, given that the term carries a sentimental reference to FFXI as well, albeit in a different context). But this is the way out that problem that I described earlier. The Ancients didn't know everything, and Dynamis was one glaring hole in their knowledge base. As long as it exists, there are going to be things out there that aether alone cannot explain or quantify. And there are going to be gaps in our knowledge and worldview as a result, too. So keep your mind open - there still might be a bit of real magic out there yet.