If reusable waste fractions are handled in waste processing plants such as incinerators in developing nations, it would cut out viable work for local economies.

Where I live the waste processors actually remove any biodegradable plastic bags from the organic waste fraction - they don't degrade fast enough for that particular process.

A number of studies on Municipal Solid Waste (MSW) have indicated that administration, source separation and collection followed by reuse and recycling of the non-organic fraction and energy and compost/fertilizer production of the organic waste fraction via anaerobic digestion to be the favoured alternatives to landfill disposal.