Earlier quoted context omitted.
The problem with glass is that it isn’t biodegradable. If it gets broken, it can cause a hazard for humans and wildlife. If it gets thrown away, it’s not going to break down. Glass is good for the ideal case, but not great for the other use cases. For milk and juice, it’s seems like thick paper might be a better option, since it’s biodegradable and recyclable.
Glass is essentially sand. Sure it may be sharp when it just broke, but it gets dull pretty fast in nature. Of all the things that got dumped onto this beach at Ft Bragg, glass was the least problematic. https://en.wikipedia.org/wiki/Glass_Beach_(Fort_Bragg,_Calif...
Especially when a critter chews on it accidentally, or it gets crushed under foot and some ends up in the foot.
It's the dulling process that sucks.