Or they could just.... use the actual rules?

D&D rules are pretty well grounded in realism when magic is not concerned. It's Larian who decided to buff Jumping and Shoving distances to ridiculous levels because they revel in slapstick and memes, regardless of the style of their own game.

BG3 being presented in a very realistic style but gameplay being superhero anime is not a good match. It's distracting and annoying. Magic jumps feel like nothing when every jump is a magic jump.