That quote has literally nothing to do with the fact that Kalecgos' blue hair is an indicator that he is a dragon.
Again, show me a Void, Blood, or High elf that have the same blue hair as Kalecgos. It's a pretty simple ask.
Yeah, Kalecgos' hair and Wrathion's burning eyes are my evidence. Your responses are nothing more than constant goal shifting.
Yeah, there's no human in WoW walking around with eyes like this;
Thus indicating that Wrathion is not human.
Wrathion isn't undead, and the glow of undead eyes (like Sylvanas) is
clearly different than what we're seeing from Wrathion;
Which means they're not the same.....
Because he chose not to have scales, horns, or wings in visage form. He chose to have burning red eyes. Just like Kalecgos chose to have bright blue hair that no actual half elf could replicate.
These are shockingly simple facts that you seem unable to understand.