Dude, I feel you are getting a little bit excited, aggressive and rude, so I cut this short here. Thank you for the conversation. The only thing I am defensive about is the Origin-system which is dear to me. So whenever someone states that it is useless and should never appear again, I'll say that I enjoy it and why. Telling me I am objectively wrong in this because it is objectively bad because I don't value what you value is super condescending.
Dialogue in real life is neither efficient nor multi-functional.
It's not real life though, it's a work of fiction. The dialogue is supposed to sound believable but ultimately it has several jobs to do, characterisation, driving the plot, creating mood &c.
But options are the bread and butter of RPGs (It's how you go about allowing someone to "Role Play")
I think the crux is, I didn't buy it as an RPG (speaking in terms of genre) but as a strategy game with an interesting enough narrative and characters. I had an immersive sim shaped hole in my heart that needed filling. It doesn't mean that I don't value the roleplay component but I am obviously not as much into having to make every choice myself as you guys. I am perfectly fine with my character's love-interest chatting about us with our friends while we are adventuring and not having to do it myself.
The clip is trying to highlight that Morrigan is directly referencing the player romancing Alistair. Rather than a "Generic romance dialogue"
The thing is, for me it is very generic, as far as romance dialogues go. As in: it's not especially compelling dialogue (Compared to say how Astarion roasts your romance choices in act 1) and I overall don't get much out of this - but I explained that above, I hope.
The tiefling party is a nice example though, because the overall setting and mood make the chats about with whom my character might spend the night much more appealing and I like their different approaches. It took me a while to find out that Shadowheart can play matchmaker for you, which is very cute.
As for the rest of what you wrote, I did read it but I have to think it over.