

Blizzard is bad about this with WoW too. A lot of the content is only available as launch-day cinematics, and is vaulted once the expansion has launched. Getting the full plot for WoW as a new player is basically impossible, because so much of the game has been hidden from players.
It’s to create FOMO, and keep players active. If players know they can access content whenever they want, there’s no incentive for them to log in right now.
Yeah, OoT feels dated by modern standards, but that’s largely because it set the standard for 3D games. Future games have built upon the mechanics, but OoT was what paved the way.