If Erinyes became an Angel Envoy because of the war, then Akpolis was solely elevated by virtue of his own talent.
Compared to Elves, the history of the Lizardfolk is even older. In the age of the Dragons, they were the very definition of a Short-Lived Species.
It was an era before The Sun was born, when the world was enshrouded in darkness, illuminated only by a lone moon. The entire world was swamps, seas, and deserts, and in its humid and dim environment, the "Scaled Ones," "Winged Ones," and "Mammals" were the three major classes of species. All sorts of bizarre creatures gathered together, able to communicate with one another without the need for language or writing.
Serpentfolk, Lizardfolk, and Avianfolk are all ancient races that existed during that time.