As I understand on his statement, the new update already adds wagering requirements the daily quest. The casino can update the ToS anytime for all their bonuses and promotion including daily quest even though this promo exist since the beginning.
I'm not BC.game player anymore but they are updating their rewards structure since many players manage to get profit with their promotion due to weak requirements before. Read the updated ToS because they might apply the same x40 wagering requirements now with the daily quest.
Yeah in the past week I saw a lot of updates related to bonus requirements for example the wager target increases to X60 and all inhouse games only contribute 5% to wager progress this means that this game cannot be relied upon to complete the challenges and wager's requirements. If you are not a BCgame user, this is the right time to create an account because they offer free balance $30 for all new users but you can only use it in the Inhouse game.