>>715159556 (OP)Helios ending is the only ending, the others are just an illusion. Like Morpheus says, it's not a matter of "if" humanity will create the machine-god, just "when".
Illuminati ending = "have someone else make the helios equivalent and control it, later"
Dark Age ending = "have someone else make the helios equivalent, much later"
Helios ending = "work with Helios now"
We know this because Deus Ex has a direct sequel and we know what its endings are. It has its own Helios ending, the Illuminati ending where Ophelia serves the same purpose as Helios, the Templar ending which is just another dark age ending that turns the clock back, and the Omar ending where the Omar themselves are merged into a collective machine-god hivemind.
Even if you discard IW it still makes sense. Technology progresses, technology inevitably gives rise to stuff like Helios, destroying it is basically just Luddism and serves no purpose long-term. The others are just a delayed Helios ending.