Well, I’m not really sure who is summoning the dragon demons, since they aren’t very chatty.
I have no idea how long they’ve been in Astlan, naturally, I first encountered them in the Abyss, by the time I found out about them being in Astlan they’d already integrated.
Most of what I know about them is from talking to other, normal, demons.
I would guess the dragon names are probably hard to pronounce since a dragon’s mouth and throat is much different…although rumor has it that some dragons in Astlan can talk so…who knows.
I would assume that if a wizard doesn’t have a mechanism to address the pronunciation, that wizard is currently dragon dung.