Well... agree to disagree. To each their own, but to me the obviously originally Russian (sentence structure, punctuation, emphases) long and unformatted sheets of text that they try to mash into a single dialogue line / paragraph, which get especially awkward when you hear voice actors trying to go through the whole thing in one take (often screwing up pronounciaions and delivery, which isn't really entirely their fault) aren't really the finest example of writing. You can adapt/translate something with far more finesse. As for companions, their arcs feel really forced and artificial. Can't really refer to WotR here, but in Kingmaker Valerie's questline (for example) left me more confused than anything about what the point it wanted to carry across was supposed to be. I also didn't like how rigidly scripted they were, with me having Kanerah/Kalikke die on me because my LG paladin didn't want to do anything with their devil sire.
Oh - perhaps it is because English is not my native language - or perhaps it is because I am not familiar with the Russian language - but I never noticed the ... Flaws, that you mentioned, in the structure of the text/speech in neither KM or WotR.
I very much get what you're saying when it comes to the companion arcs. There were few companions whose story arc I enjoyed in KM... In fact, I'd even say I'd consider most of the (at least among the good alignments) companions rather... Boring. Tristian was sweet as sugar, which was adorable, but I can totally see why a lot of people would find his persona annoying or even unbearable. Also, speaking of companions, I thought it was a really weird turn for Owlcat to make both of the romancable female companions (Valerie and Octavia) so extremely similar. I mean, I got really tired of listening to Valeria very early on, and hearing Octavia's "I think I broke a nail!" every time she failed at disarming a trap had me looking like "-_-" irl. X]
Imo, they did a *much* better job with companions in WotR. Then again, most of Owlcat's better companions are the evil alignment ones. Their good alignment ones are usually rather uninspired, but their evil alignment ones usually have much more depth to their personality.
That said, I am a fan of Larian's writing too, in many cases! While the main plot of DoS2 wasn't really that compelling for me (chasing godly powers and all - but hey, it is in the title!), I really liked a lot of things about the general writing. I really like each of the companions and I absolutely adore the quirky narrator of DoS2. c: And of course, I adore Obsidian Games' writing as well! Or well, at least PoE(1) - it is my favorite game of all time in everything from main story to companions to music. c: Absolutely adored everything about it! The sequel was... Not a bad game per se, but there is definitely a long list of things that I did not enjoy as much (*especially the ending*). I did write down my thoughts about it in my open letter to Larian that is linked on my signature so I am not going to go into too much detail again.
Hoot hoot, stranger! Fairly new to CRPGs, but I tried my best to provide some feedback regardless! <3 Read it here: My Open Letter to Larian