Classic 45-47 maneuver, first create a problem. Then solve it, often poorly and incompletely. Finally, claim victory, another 300 IQ 5D chess move in the books.
Or set a little timing booby trap. Like in this, "We're going to cut Medicaid, but only after the midterms, so if you start screaming about it, we'll blame the Dems for it."
It lets you claim BBB doesn't increase the budget by as much as it'll ultimately do.
By having a bunch of random provision in BBB that generate revenue it lowers it's impact on the defect and then you can repeal them later on after passing BBB.