I see what you mean, but in order to win Super Metroid you still have to beat all the bosses to open Tourian, and the same with the five bosses you need to beat to get to Dracula in SOTN. In BOTW, once you're off the Plateau, you can literally walk directly to Ganon. And, like you mention, being able to skip a substantial chunk of the game to get to the final boss is as present (if not more so) in other genres; it's been in Mario since the NES!