Getting items one at a time is to prevent introducing too many concepts to new, or bad, players at once though.Nintendo does not want to overwhelm players by giving them 8 different kinds of item based puzzles to solve an hour into the game and it's important not to because Zelda is the first game for many people.
The Forest Temple is a poor example because the only completely new concept you use at the time is the hookshot. The new item of the dungeon, the bow, has already been used in spirit through the slingshot. Every other type of item based puzzle has already been done before multiple times in game.
The Forest Temple is a poor example because the only completely new concept you use at the time is the hookshot. The new item of the dungeon, the bow, has already been used in spirit through the slingshot. Every other type of item based puzzle has already been done before multiple times in game.