[jeffbee]

A person who says that Celeste did not need all of its levels to tell its story did not pay any attention to the story, or is not able to empathize with the character. Also if this person bounced off Celeste then they probably saw 5% of the content, not the 33% they suspected.

[silvester23]

The claim is not that they play about 33% of every game but that they completely finish about 33% of all games they play.

[jeffbee]

I understand. But even people who get to the credits of Celeste might not be aware that they're maybe 20% of the way through the game.