Playing the Dark Urge seems more like choice between "embrace evil" and "trying to resist evil, but fail anyway"

i think you make the point.
because the dark urge is the murderer who does a series of murder in baldur's gate 15 years ago.
this means the dark urge's soul is surrendered and corrupted by his/her dark urge.
thus, how can the dark urge have the confidence to resist his/her dark urge in the beginning of the bg3 ??
the redemption should be that the dark urge seals him/herself or just killed him/herself, return his/her dark urge power to somewhere it belong.