I agree that describing any of the current party members as "evil" seems like a stretch... But then again I can't really say I give a shit about that particular debate. Just give me interesting and amusing characters and I'm fine.
I can promise no one will hear me cry like a bitch because Shadowheart was a bit sassy with an answer or Lae'Zel pouted when I helped a kid.
For me it is more like I am tired of them constantly stepping in and telling me, that they do not like this or that, in the rare cases they comment on a quest. And even if they do compliment me it is always along the lines of "oh now finally you see the light". And the other times they are going the Telltale way of "Lae'zel will remember that." Yet nothing happens really from that "interaction". There is no consequence attached, just a constant bickering and at the very best patronizing. Even Gale just says stuff like "Don't worry, chap, things turn sour sometimes." Like what is that supposed to even mean? Further it is pretty inconsistent, like why would they even care whether I helped a child along the way? Who actually dislikes shutting down a woman like Kagha and saving a child? At the very worst, a character would shrug it off. Companion interaction is really tiresome in this game. It is not that the characters are evil or very pragmatic, it is the writing and the system attached, that is the culprit here.