This fictional space is different from ours, and it operates on a different set of rules.
Yup ... My point exactly ... fictional space comes with different set of rules, and that is how things works there ...
The only difference is that for myself, it includes sheating weapons on back. (If i want to ... note that i repeately asked for making it both optional, never had any problem with sheating on hips.)
Fiction space doesn't mean that it doesn't need to feel authentic - it is still bound by the same general rules of story telling, including suspension of disbelief.
Just taking this one example, it is not that BG3 decided for weapons to be carried on the back (like it is for Geralt in Witchers) - it is just that they don't want to create seperate animations and sheaths for different weapons. But then why does the game has shiething in the first place. It doesn't have practical purpuse, it is purely a cosmetic feature which aim should be to make the world more believable. The fact shiething works in a distractingly illogical and physically impossible way - it is better to not do something at all, then half-ass it.
And coming back to the previous point of yours - no, the experience can't be occasionally immersive. When film/game is described as immersive that usually means that it doesn't draw unnecessary attention to its artificiality and makes it world feel authentic.
