>>719881925
Because the non-spinjump goes higher. A lit of the time you're expected to do a non-spinjump to clear a jump, but you also have to move a good distance horizontal, leading to a fun interaction where you have to NOT hold the direction you wanna move, jump, then START holding the direction as soon as you're in the air in order to make the jump. Too early and you spin, too late and you don't move far enough horizontally.
In super metroid both jumps go the same vertical distance so it's more just mild annoyance about the space jump not working unless you spin even if you wanna go straight up.
