Despite the Voidsent inspiration, the Au Ra have always been moreso compared to dragons. Aside from the Ishgard persecution mentioned before, even the character creation screen mentions that there is ongoing debate about how Dragon-like the Au Ra actually are.
And while scholars seem to shy away from the idea, we do know that gender disproportion IS a thing with several dragon species in game. Another thing to note is that the barbed tail option for Au Ra characters straight up matches the tails of some dragon enemies. (Then again another tail option is more similar to the Amaljaa)."The curved horns and beautifully patterned scales that characterize the Au Ra oft give rise to speculation that this Hyur-like race native to the Far Eastern continent of Othard are, in fact, the progeny of dragons. This, however, has long been disputed, with scholars citing several distinct differences in the two races as evidence of decidedly dissimilar roots—the first and foremost being the enhanced hearing and spatial recognition granted by an Au Ra's cranial projections (traits not attributed to draconian horns), and the second being the gross disproportion of body mass between Auri males and females (again, a trait widely unseen in dragons)"
Dragons are pretty powerful beings, I wouldn't put it in the impossible realm for some dragons, to be able to give birth to a new species or even to have other races conceive for them. It certainly wouldn't work in the traditional way we thing of conception though. It's probably much more abstract (for example Padjal, or irl The Virgin Mary or conception of Siddhartha). I'm not sure what would cause any sort of offense.