Two thingsAll the other exemplars live on the outer planes. That's why efreeti aren't considered exemplars of lawful evil
1) Breaking the rules should kind of be Chaos's thing
2) I never said Fey should be "the exemplar". Just that they were a Chaotic race that I liked. Then people started claiming that "we need something from Limbo". And, in questioning why we need something from Limbo I got "Limbo is part of the default cosmology"... which is really not an answer for "why does the chaos exemplar need to be from Limbo" and in following that logic down the path, pointing out how it is kind of a silly tradition thing because it doesn't seem to be for any real reason we have now come to "well, everyone else does it" which brings me back to point #1
Why does Chaos have to follow the rules?