Where did "terse and to the point" come from?
Your fixation on "Efficiency", your stance of being against "More dialogue" and wanting there to be "Purpose" to all dialogue.
I.e. Terse and to the point. Little to no waffling for the sake of waffling. Nothing that is there simply because people like to talk about things. Nothing "Extra" that helps push characterization. Just everyone saying the bare minimum for what specific purposes they require.
But I feel the conversation gotten a little lost, I am not sure what the context of the scene with Morrigan is, it reminds me of the scene when Astarion needles you after you spend time with Lae'zel (flopping about like dead fish) which stands in the context of his simple plan, and shows you just how an obnoxious a gossip he can be. It makes sense for him to butt in here but it would feel very weird to me if every companion wanted to chat about my character's relationship.
IIRC the context is Morrigan being good friends with you and you deciding to pursue a romance with Alistair and then talking with Morrigan at camp. Whereby it's one of the new gossips that people will want to talk about because people like to gossip about such things.
As far as every companion commenting on such things... Part of that stems from how every companion becomes your BFF in video games. So everyone acts like your BFF, wherein a comment about you starting a relationship wouldn't be out of the ordinary. (One of the myriad of issues with current video game relationships, everyone being your bestest friend in the whole world)
it's hard to imagine someone is looking forward to this conversation.
It's less "Looking forward to this conversation" and more "It's a pleasant surprise to encounter it"
I mean, I don't "Look forward" to any conversations in any video game at all. Given the nature of dialogues they're only interesting the first time when you're obtaining new knowledge - Afterwards you already know what is going to be said and the overall outcomes of the conversation.
But it's nice to encounter things that help flesh out the world and characters. Stuff like the banter that BG3 companions have as you wander around. Is it deep and meaningful? No. But it provides additional information about the characters and especially how they view other companions (Which is even nicer given the rarity of any inter-companion interactions in video games)
So I'm not sat here thinking "Gosh, I wish my companions would talk about my romance choice!", but rather I'm pleasantly surprised when my choices in games (Not necessarily romance options) are brought up by companions and shape their views and opinions. As it provides more depth to not only the companions themselves, but also to decisions I make.
Even more so if I care enough to have my decisions swayed by the impact they can have on companions, an extreme example being the reasonably common "Do you become a Lich?" option, where picking yes grants you a ton of power to your character but the cost is most companions really don't like that (And will often leave you or be killed in the ritual of you becoming a Lich)
