I didn’t either until i started playing but its length and size isn’t just for the sake of it. It’s that size because it’s that complex. It’s like The Witness dialed up to 11
For the most part, most games are antagonistic. And that's fine, that's the fun. Goombas are player-antagonism. Dark Souls is antagonistic. But they are engaging you and testing your ability to execute game mechanics with increasing amounts of precision.
Having to sit through a full hour of video to slowly trace a line is pointlessly antagonistic. It only tests a player's desire to sit through your bullshit. Being able to do it does not make you better at any other part of the game. It doesn't even make you better at that part of the game.
You don’t have to sit through it. It just asks the player to slow down and listen for just an hour. If something, it makes you better in general by just listening to a fantastic talk by Brian Moriarty, that’s the achievement.