Do you think there is a reason Garleans can't use magic?

[JeanneOrnitier]

I'd rather not have everything that's different be the result of Allagans, Ascians, or Garleans. Not everything has to be explained. Why can't they be like that just because?

I mean I agree but it's precisely because everything tends to be Allagans or Ascians that I'd wager this probably is too. Notably we didn't see any Garleans in Norvrandt, which implies they came about after the Sundering unlike a lot of the other races.