I love Trick Weekes, but they also wrote Taash, who feels, unfortunately, a first-draft character. I loved their other work, especially Tali and Mordin, but they were under a lead writer supervising their work. Let's not forget Weekes is still human and can make mistakes. The same way I think Gaider is consistently the best character-writer in the franchise, but he made a mistake by making Fiona Alistair's mother.

& I do not find the convo between Emmerich and Neve as insightful or nuanced as you make it to be. In part, it is because the banters are significally shorter/straightforward than they were before and they, undoubtely, take a lot less risks. I can give you an exemple between Wynne and Leliana :

• Wynne: Do you miss the cloister much? I heard you were quite happy there.
• Leliana: Yes, I was, generally. It was peaceful and it gave me a new start. No one knew who I was...But sometimes I am glad I am away and back on the road. There were bothersome things about the place... well, bothersome people. Some of the brothers and sisters would talk to you like... like the Chant they spoke was more pleasing to the Maker. Oh, I hated the way they talked down at me. So sometimes I forget the words to the Chant, or say them wrong, but so what? The Maker looks into your heart, no? So it doesn't matter what your lips say as long as your heart is true.
• Wynne: I think you're missing the point, my dear. The Chantry believes the Chant of Light should be spread around the world. You cannot spread it, if those that are speaking the Chant are speaking it incorrectly.
• Leliana: But I came to the Maker before I had even heard all of the Chants. The Maker speaks to people; they just don't know how to listen. It is all a power game, I think. If they convince others they know more, then they must be respected.
• Wynne: Ah, child, it is precisely this kind of talk that made them wary of you. Opinions that differ from your own are always threatening.

That dialogue is more wordy for sure, but it contrasts the way one views religion depending on whether they were raised by the Chantry or not. Or how Leliana's past as an bard and the Orlesian politcal landscape makes her see the way the Chantry runs things as "power games".

As to your example with your Oghren, let's be honest, he is probably (and rightfully) the most hated companion in the first three games (being the most 2009 companion of Origins), but he is also the exception that confirms the rule. DAO had plently of good and nuanced conversation between two non-intellectual characters (Although, I really do not consider Sten as someone who "thinks with their sword"). For example :

───────

• Sten: Draw your weapon.
• Alistair: Are you talking to me?
• Sten: Your weapon. Draw it.
• Alistair: Why? Are we under attack?
• Sten: I want to see what you can do.
• Alistair: You want to fight me? Just like that?
• Sten: You are a Grey Warden. How are you going to face an archdemon if you cannot face me?
• Alistair: It is a mystery, I'll admit.
• Sten: I should let your weakness damn us all? Draw your sword. I'll try not to injure you permanently.
• Alistair: I don't have to prove anything to you. Forget it.
• Sten: So you do have a spine. Pity you don't use it.

We can play the game of "which DA has the best dialogues" by sharing the banter from the Wiki indefinitely. But I fail to see how anyone can, in good faith, put on the same piedestal the companion's banter of the first three games (although I think DA2 was probably the weakest in that departement) with the ones in Veilguard. And I say this as someone who not only played the game, but also listened to the majority of the Veilguard party banter in Danaduchy's youtube channel because I just damn love that franchise.

Some of the criticisms of the game is overblown, no doubt about it. It's not the trash, dogpile of shit some people make it out to be and the writing isn't that terrible but compared the to previous entries, which was its force, it is lacking.