Wild God post-Shadowlands just means “sufficiently powerful nature spirit”. Dryads (his daughters) die and stay in the Shadowlands, Cenarius did not.
I actually have a theory about this:
Well no.
Taunka and Highmountain lore, yes, but Yaungol is the precursor race. The Night Elf equivalent of thinking Yaungol lore is Tauren lore is insisting Troll lore is Night Elf lore.