Collective spending in this case != elective spending. Taxes are compulsory, church tithes are not, but the end result is the same - the exploitation of the lower and middle class.
There is no "collective spending" when the spending isn't done by "the collective". To argue that "some people spend money, those people are part of the collective, therefore the collective spends that money" just removes all value from the terms. Sure, the "worldwide collective" spends money on everything ...