Nobody cares to explain what's what and how's how. There are some duergars and chardalyn and some strangely looking sentient crystal or something.
Icewind Dale is a thinly-veiled pretext for wokeness unbound. Yeah, you really have to be well-stocked with patience to bear all these stronk wemin taking care of either a bubbling idiot type men or the child-like ones. To see this clearly, one has only to compare 'Fell's Five' treatment of its tiefling character of Tisha, a voluptuously seductive warlock, to what we've got here - an asexual, redskin warrior-something called.Patience. Really, it's astonishing how far it went in the mere few years.