You might want to check what Reapers actually do again. And that entry is still not specific examples. Still waiting
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Considering the reluctance to add new options to the character creation system, it would more likely end up as a glamour headpiece or a fashion accessory.
What does it matter if it offers "specific" examples or not? It's an in-game textual basis for it. We only meet a tiny subset of the Garlean pureblood population, so if it is a trait that is rare in their populace, it stands to reason it'd be exceedingly improbable to run into it; granted, much of their population is sadly dead now. The source he offered would be a sufficient lore basis for an already exceedingly rarefied character to have such an origin story and still use aether.
What examples of male Viera outside of their jungles were there in SB/SHB? Er... around a grand total of zero. Now they're all over insular Sharlayan.