I am in India. I know people that live in farm areas or have lived there in their childhood (farmer relatives).
I’m pretty sure their culture is older than just 320 years, but they didn’t go around defecating on or next to the streets, which I can say because the streets were not full of human shit. Although there would be the occasional dog shit and then large piles of sun-dried cow shit (which would also be much farther away from the streets).

Any civilisation that survives through enough disease outbreaks would have at least a rudimentary understanding of environmental cleanliness. If people are dirtying places despite that, then I consider that a reflection of accumulated malice.