I sort of agree with the overall point even though I didn't find the characters to be completely annoying. All of the origin characters have some type of darker aspect to them that makes regular goody-two-shoes characters like Halsin seem refreshing in comparison. It's just kind of a tired trope to make characters seem like they have more depth than they actually do. Their abrasiveness doesn't really help either.
I think this is very much the result of people thinking they are above the tried "boring" archetypes like the good paladin, the wise wizard and the like. The problem is that you need these characters to convey a sense of normalcy and to root the action and make it relatable. If everyone is special then no one really is special. Extraordinary characters can only shine if you see them reflected in the ordinary.
