It is a big problem I made it my main goal to get Larian to fix. In short, I feel like Larian gives you choices but don't care about making them work in the narrative. much more info and Examples could be found here:
https://forums.larian.com/ubbthreads.php?ubb=showflat&Main=92420&Number=706566#Post706566
If you allow, I want to add your comment to the example list there (chapter 4)

Larian's Biggest Oversight, what to do about it, and My personal review of BG3 EA
"74.85% of you stood with the Tieflings, and 25.15% of you sided with Minthara. Good outweighs evil, it seems."