https://www.gamespot.com/articles/rockstar-clarifies-red-dead-redemption-2-100-hour-/1100-6462550/

As we approach the release of Red Dead Redemption 2, now is the time for the publisher to promote the game with impressive stats about just how much work went into the final product. But one number has been raising eyebrows, forcing Rockstar co-founder Dan Houser to issue a clarification.

In a lengthy interview, Houser suggested that the team worked 100-hour weeks several times throughout 2018. But now in a statement to Kotaku, he has elaborated that he was referring to the senior writing team, not the entire Rockstar development team.