The article talks about various people contributing to the regular cleaning. I think one solution to the developing job/motivation crisis is some sort of Civilian Conservation Corps providing a base wage to people in exchange for a few hours each week of easy, non-essential work contributing to the general decency of a locale. Pruning, sweeping an area, weeding a verge, removing litter from a roadside. The sort of work you see gardeners doing at dawn throughout Asia, especially in resorts.

There could be many older men for example keen to have a sense of purpose, doing a task they're capable of and staying active, rather than putting in 40+ hours/week at a desk.