Quote Originally Posted by Tathar View Post
That's pretty well explained by RoP and ARoP. I'm pretty sure that those two merely act as an accelerated alternative to natural growth, especially considering how long it would take naturally.
The RoP and ARoP don't accelerate growth, the growth is impossible without them. The RoP itself states that time is effectively stopped for dragons; they cannot age naturally.

Even if the Rites were accelerated growth, they'd still be fairly irrelevant, as there are more than dragons in Istaria and the Rites wouldn't explain growth or time passage for the biped races.