Has Bethesda ever retconned the dragonlings shown in Daggerfall?
Nopper, but I still see them as immature/baby dragon that would hardly get to advlt age by the time the game end in Daggerfall.
Nonetheless, I pretty much view Dragon as "original" in the sense that they pretty much are not the "evil dragons" that horde treasures. Of course, its easier to see them in the position like Nafaalilargus or Wyrm of Elynglenn guarding something very important but to think, its better to secure something that pretty much can shallow a human whole rather than letting a human guard it themselves (dragons don't know what to do with the item they are guarding anyways).
Then there the account of their power. There are accounts that one dragon alone can do so much damage to an army. There is a reason why their power is always view in god tiers. There are defeats, but for a reason. Cyrus got lucky the dragon in a small treasure room and that he is the main hero of the game. I am pretty sure there are more to the story about Wyrm of Elynglenn than just one sentence, like preparations, death counts of the knights, and
days of fighting the wyrm, blessing from the 8 divines (though I still see this DLC as a typical Knight and Shining armor, so seeing this account about the dragon isn't all that surprising). Same goes with that dragon-like creature that a bunch of highlander fought in Black Marches for days with getting a tooth as a trophy.
Pretty much all this combination, plus their status within the Empire as the Nuker, pretty much distinguish themselves from other fiction of how they handle dragons.