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The dark theme and overbearing presence of the soul eater was okay for Mask of the Betrayer, because it was built onto the existing backdrop of a wealth of story that you already built for yourself; it was the second game following on from a first; we don't have that here - our only option for a custom character that is tied to the story is this dark and terribly invasive thing, which looks at the moment as though our options are mainly 'revel in being a murder hobo' or 'resist each time and don't engage with any of the personalised content'.
If we had an 'Origin Character' who had some ties to the story that were subtle but essential - something that made the sure connection that we are here, and it must be us, for a present reason, that did not impinge further upon our own character, that would be great - that's more or less what a lot of folks would like; a game that ties our character to the story in an essential way, and gives us elements that can apply only to us, or focuses the call to adventure on us, but which does not try to tell us what we think, or how we feel about any of it - rather that gives us a chance, through dialogue and other interactions, to tell the game how we feel about things and what we think. Dark Urge, if it wasn't such a ridiculous, over-the-top Larian set piece of gore and bloodlust, could certainly have been that... but it seems clear from what we've seen so far that it's not.
I think the entire lot of the origin characters is that they come with a pre-defined 'point of view' and history- that is going to flavor your dialogue choices. In the case of the Dark Urge it just becomes more obvious and direct since you don't have any specific memories like Astarion, Gale or Karlach. Shadowheart is likely to have similar things happen since her memory has been erased and we have seen her have reactions to things that she doesn't quite understand.
Only a custom Tav character is really free of that. However, you will likely start to acquire tags once you start making big good/evil/neutral decisions.