Shadowheart and Lae'zel both annoy me and I really use neither if I can help doing so. Granted, I'm still getting to the side quests in Act 1 before moving on, so grain of salt, but they both currently occupy one end of an uninteresting extreme imo — Shadowheart the shrinking little flower that needs saving, Lae'zel the shallow, judgy barbarian I'm shocked to hear would have an arc.
I dislike her because she's unendingly rude and violent for no reason, even when the occasion would go over better if she chose to cool it. If she were male, I'd still hate her him because it's every time he opens his mouth. Nobody likes a dick bag.
As noted in the article, Astarion IS pompous and mean, but the important part is he's snarky instead of outright abusive, is rarely outwardly violent, and does what he does in a way that's funny. I keep him on my team purely to hear him backtalk Wyll and reminisce about hedonism and do not get the sense at any point that he would hit me over the head with a club and drag me into a cave.
If he acted all rough and edgy and broody instead of intentionally looking for amusement via horrifying randos just to see what they do, I'd consider him the world's most boring fanservice.
Anyway, the actual shining gem is Karlach and I'm increasingly in disbelief that I've seen no one singing her praises. I usually do find female characters underwhelmingly written and moments like Karlach are very needed reminders that I'm not some weird misogynist, I just hate bad writing and it's everywhere. I fell INSTANTLY in love with that energy and remain so.
Ultimately, I may not like the one, but I am glad we're able to do Warrior Female now and go all the way with actually making them warriors. More Amazonians in media!