I didn't say Dier was the only one responsible. Just that he still does the same Dier shit he's always done. Rarely, if ever, proactively tries to win a ball or make a challenge. Back off and/or stand still and hope for the best.So many agendas. He didn't 'back off' he just held his ground.
If you had any interest in what actually happened you would see that Alphonso Davies completely loses Saka's movement, giving him about 3 yards of space in the box and the time to bend his shot.