Why are there pixies, etc. on the First but not the Source?

[SannaR]

Honestly I've been thinking about this ever since Shadowbringers.

In ARR, it's pretty clear that the game writers were going for "the fae folk" when it comes to first the Sylphs, then the Moogles: playful and cheerful on the surface, but with no sense of the frailty of mortals, or when a game stops becoming fun. A lot of the comments from NPCs warning us about Sylphs and Moogles are along those lines, implying that the Sylphs might have killed people before simply due to "playing around" and "mischief". (I can't recall the exact words, but if not "killed", then certainly "hurt badly".)

However, when we actually meet the Sylphs and the Moogles, they're relatively chill (tempered brethren aside) and quite understanding, and in fact we mortals are the ones who are more threatening to them.

So the Pixies of the First feel like the writers finally getting to show the "fae folk" archetype properly. Which does mean it might be possible that the Sylphs might have learned their alleged mischief-making from ancient proto-Pixies, but had it smoothed over by longstanding interactions with humans.

(I don't know what the deal with Moogles are. They exist on the Source and the First, so they probably have an origin in the Unsundered World.)

It would also sort of explain why the Slyphs always ask for fruit and the like to be placed on top of the buildings. Sure, they say that they think it's funny for us to do that and they like the food being there. But what if that's their way of making sure the pixies aren't forgotten about. So that they can still be hidden, but also be given offerings.