That’s there half because it’s a tabletop system and half otherwise there is a break in causality. Just having a random chance of success or failure isn’t very obvious and you don’t see near misses and so on. For most people showing the action is more satisfying.
The underlying system comes from D&D so is full of quite crunchy randomness where results are usually rolled in front of everyone so you get a much more social experience and failure isn’t quite so bad (usually).
My main complaint about BG3 is actually how far they changed it from D&D. My favorite games are owlcat’s two Pathfinder games which is a tabletop system far crunchier than the streamlined D&D 5e.
But you are missing what I said. The information is great, the unskippable animations are not.
At least on PC, you can click a couple times to avoid the animation. I tend to when the outcome is pretty likely (trying to roll above 10 with a +8 modifier for example) but the anticipation is exciting to my monkey brain if it's a tougher roll.
The underlying system comes from D&D so is full of quite crunchy randomness where results are usually rolled in front of everyone so you get a much more social experience and failure isn’t quite so bad (usually).