I recall people in the UK saying in the 80s we should use plastic bags instead of paper to save the trees. But cordial was still sold in glass bottles with a d

I recall people in the UK saying in the 80s we should use plastic bags instead of paper to save the trees. But cordial was still sold in glass bottles with a deposit. The only negative sentiment I recall for glass was a belief that discarded bottles started forest fires and killed animals that crept into them but couldn’t get back out.