Beat the softened cream cheese until completely smooth and fluffy.
Mix in powdered sugar, vanilla, and lemon juice until creamy with no lumps.
Whisk the pudding mix with cold milk for 1–2 minutes until thickened.
Fold the thick pudding into the cream cheese mixture until blended.
Gently fold in the whipped topping just until light and airy.
Stir in half of the cherry pie filling to ripple through the fluff.
Combine graham crumbs, melted butter, and a tiny pinch of salt until evenly moistened.
Spoon crumb mixture into the bottom of a dish or cups, lightly pressing to set.
Layer the cheesecake fluff over crumbs and top with remaining cherry filling.
Chill for at least 1 hour to set before serving.