Whats funny about it?
It was explained that this is how they got access to the Paladin class.
An’she (Sun) was the counter balance of Elune (Moon) and the Sunwalker is supposed to be a Nature like Paladin Druid. It was all expalined in CATA.
However, this awesome writing team messed this up in Legion with the class hall story and surprise, surprise they confuse everyone with another retcon 
Sunwalkers are not Paladins, supposedly.