I mean, we have two Shadowbringers.
Us, returning night to the light-wracked land.
And Emet-Selch, returning the shadows - more properly shades, or ghosts - of Amaurot.

And we *were* the villains.
At least according to Vauthry - who, regardless of anything else, was the legitimate ruler of the land.
Even if the story didn't stress that much.

I don't feel like the marketing lied to me at all.