Good comments Mas Fred! And very diplomatic, I might add, due to your rejoinder "It may be untrue in places I have yet to visit, I'll let you know if I find such a place."
Maybe this is enough to deflect vituperative outbursts from the mount. Who knows?
Have seen pristine areas in the 1980s: Bali's Lake Bratan, inland from Mataram in Lombok and rural Timor. This is getting less and less now. Generally the poorer areas of Indonesia such as NTT and the more inaccessible areas of Kalimantan fit the bill. This is mainly due to the high costs of imported goods both Indonesian and foreign. This again is due to poor logistics which makes the transport of these often unnecessary items non-viable.
Generally local populations discard of their items by burning or river/lake/sea dumping. It is only really a threat if the items are non-biodegradable. Even in the case of biodegradable items, the capacity of the environment to actually absorb waste has to be assessed.
I maintain that due to significant overcrowding in urban and many rural areas this capacity for absorption and regeneration has long since passed and this accounts for the veracity of my prior statement concerning S Bali being a cesspit. This has of course been extended to many other areas of Bali.
Congratulations and my thanks to those that are taking an active role (also) in trying to ameliorate conditions through local "Clean Up" days and the like.