It's just in-engine stuff from DOS1 and DOS2. Even if it wasn't what do you think would have been finished in the time spent writing the dip subroutine?
I generally agree that dip feels kind of weird and stuff like throwing enemies and shove need to be reevaluated. I like the idea of shoving or even throwing stuff, but as it is stealth and shove work too well together. It also works way too well in certain areas with certain monsters, like the Hook Horrors.
Oh, that maybe true for dipping, but the issue with Larian cheese is so much more than just that. I know dipping is the focus, so sorry to digress...but I gotta!
The latest Druid specific animations used solely for climbing ladders in wild shape form for instance. Why this design decision? Likely because Larian are so enamored with their own brand of silly fun they are thinking how to fit D&D into it rather than the other way around. They could have saved lots of resources by making the wild shape automatically turn back to humanoid form while climbing ladders and turn back to beast form when done. Without penalizing the number of wild shapes. Simple, elegant, immersive, quality of life, resources not wasted on something that likely always will be unimmersive - because giant bulls climbing ladders is plain dumb.
