Not to cause a fight, but immersion keeps getting mixed up with realism. Immersion means how you interect with in a world not your own. Realism is making stuff realistic. We are heros (or villians) we are suppose to do "super human things" Like cast spells and fight giant monsters. It would be kinda stupid to not jump high. It makes the characters look weak if they can't jump more then say 3 inches. More so with Miqo'te, which are cat like humans. Cats themselves have super human jump abilities. Games are not meant to be untra realistic. We should do thing we wouldn't normally or couldn't do.
Also an auto jump isn't always the best choice. It is easy to get stuck in a jump loop. I've done it in ever zelda game from OoT and ff7 and ffxiii. It can be annoying and time consuming.