[1]http://www.loe.org/shows/segments.html?programID=93-P13-0002...
At the very least, these schemes are effective at reducing litter and ensuring less plastic waste reaches the environment and oceans.
Not sure if reusable glass was so much more environmentally friendly (think transporting heavy empty glass bottles through the countryside by trucks), but environmental effects through transportation might be easier to mitigate long-term than plastic pollution.
Side node: While plastic won the race for water and soda/juices, Germans still prefer their beer to be served in glass.
[1] https://diw-econ.de/wp-content/uploads/2017/05/DIW_Econ_BGVZ...
I did read a piece a few months back discussing glass against recycled plastic. Plastic apparently needs far more washing, and at higher temperature and pressure, before it can be recycled. The washing to remove glue, labels and dried food which are all more difficult to get off plastic, and also because plastic recycling is so easy to pollute and ruin the whole batch.
How well it works depends on the country or area. Here in Copenhagen, most apartment blocks have an electronics/electrical bin, so presumably the recycling rate is very high. However, the reuse rate might be lower -- I've taken a few fully-working things out of the bin.
https://en.wikipedia.org/wiki/Waste_Electrical_and_Electroni...
Perhaps we need a popular campaign of dumping all the single use plastic back to Tesco etc. :)
The EU is now also looking into outlawing some single-use plastic items like straws that contribute a lot to plastic waste. News media fabricated a public outroar over this, making it sound like the EU wants to outlaw childrens' birthday parties, when in actuality the EU focused on plastic items where there exist viable replacements made from decomposable plant-based materials.
It seems equally clear that in the absence of bans and heavy regulation no effort will be made to reduce use so I'd be in favour of everything that pushes back against the growth of single use plastics.
[1] https://en.wikipedia.org/wiki/Green_Dot_(symbol)