1.0 sort of explained that in a roundabout way, that the moogles usually keep themselves hidden and that it was considered lucky to see one, let alone speak to one (if you could even understand what they were saying - Mooglespeak was suposedly unintelligible to normal people, the fact that the player could understand Mooglespeak due to the Echo in the 1.0 Gridanian story straight off the bat was the first hint something very weird was going on) - many would go through their entire lives never even sighting one (one particular npc in pre-Calamity Gridania was rather put-out that the player was frequently dealing with them).
Apparently the reason for the moogles' preference to remain out of sight from 'mundanes' was due to incidents in the past of zealous Ul'dahn merchants regarding them as little more than cute animals and thus capturing them and selling them in Ul'dah's bazaars as pets, something the moogles naturally were not particularly happy about.
Incidentally, one of the places that even still exists in post-Calamity Gridania that was particularly associated with moogles was Lifemend Stump - the name itself refered to a legend (that was based on fact) where Gridanian children would leave broken items within the stone circle on the stump and upon returning in the morning the item would be repaired, presumed that moogles were responsible (a story quest in 1.0 confirmed the legend was actually true where a moogle is soon discovered finding the item and repairing it). Sadly although Lifemend Stump still exists in ARR, it seems to have lost it's moogle connection somewhat, but is still regarded as an otherwordly place where the aetherial and the corporeal blur somewhat.
Also although they make use of glamour magics to make themselves invisible to 'mundanes', those particularly sensitive to aether, and especially those awoken to the Echo, can still see through the illusion. As dragons are especially sensitive to aether it only makes sense that moogle magic would not work on them, and of course because we have the Echo, it did not work on us either on the carriage, but worked on Bremont, Alphinaud and Alisaie, hence the Leveilleur twins and the merchant didn't bat an eyelid as the moogles danced in front of their eyes and outright drunk his booze out of his bottle next to his hand.![]()