The fal'Cie did not breed humanity to be anything; it was an easier life on Cocoon, so even the wildlife was more trusting, less fearful of others.
That's how they lured there, but I don't think Tres meant breeding by the literal sense. Just in the same way I did, they groomed, shaped, manipulated humanity to be panicky, willingly giving their government too much power, and untrusting of outsiders.
Dysley: Cocoon is a factory, built by falcie. A factory for the mass production of human thralls.
is is revealed in one of the questions asked in 4XX Academia, during the Brain Blaster questions. Humans were not guided, except occasionally by Eden in political matters, they were allowed to live as they wished.
That's what they were led to believe, but it wasn't the case. The OG tells you that humanity is independent, but the primarch is secretly a fal'cie, and the primarch looks to be involved with anything.
Not only that but Sazh expresses frustration that the fal'cie doesn't intervene and points out that during humanity's mistakes they tend to step in. He doesn't know that Eden was already orchestrating the entire thing. And during Lightning's deceleration about destroying Eden, she says that the fal'cie are pulling the Sanctum's strings. When she thinks Dysley is a l'cie this exchange happens
Dysley: You saw those fools. A mindless mob drunk on fear of a few l'cie
Lightning: If they only knew a l'cie was the one filling their glasses
It suggest that the primarch is one of the major contributors to how people are reacting. He calls himself the Voice of the Sanctum, along with lord-soverign of the Cocoon fal'cie. Then Snow comments on how it was a fal'cie running things the whole time. (All of this comes from the exchange in chapter 9 when they first fight Dysley)
True he wasn't micromanaging life, but he was chosing which direction the Sanctum would go. But he was always in control, that's one of the things that makes Dysley who he is in XIII, he is the man behind everything.
He controlled Lightning's and co's every steps
He controlled the Sanctum and thus the power over the people
Hell, he even controlled the anti-fal'cie rebellion growing through his l'cie.
Dysley essentially is playing chess with himself, when pretending he is only a spectator.
. At the same time, their directives demanded it, and fal'Cie cannot physically go against their orders
I think this is what makes the l'cie tragic, is that they can't overcome what they were created for, not like humans.
I'm not sure, however, how the other fal'cie think of this. I remember getting into a lot of discussions after the original game on whether or not all Cocoon fal'cie were complicit in the entire plan, or they were simply forced to follow orders. And how much did fal'cie in Pulse knew. I think it's safe to say Anima knew, it branded Fang and Vanille to destroy Cocoon, and it sat in Bohdum for a good long while. But the other fal'cie didn't seem to care.
They are living creatures themselves. How can one just create something that has feelings, autonomy, and then just disown it, discard it away like it never mattered? That's one of the epitomes of evil, in my view. I don't care if "the reason for his/her/its/their life/lives" has left; a living creature is not just something to use.
This is kind of how I felt why I liked the fal'cie, the irony of it acting like gods and the authority, being coupled with the themes of abandoned, scared children. Having all the power in the world and be essentially slaves. Using and discarding humanity, and being used and discarded itself.
I think they are the most interesting part of the mythology. But part of what makes them fascinating is that they aren't innocent.