Sounds nice, but most of that doesn’t bear up to any scrutiny. I was there in the 70s and 80s and there were plenty of plastic bottles appearing. Rola cola anyone? Tetra packs were everywhere ( composites with plastics) Glass pop bottles taken back to shop were a minority of glass bottles around. ‘All’ sweets were not sold in paper bags, only the minority of old style jar sweets, well on their way out by late 70s (Spangles came in waxy plastic treated wrappers, as did all chocolate). McDonalds appeared in the north around 1982, their burgers WERE in polystyrene, and before that was Wimpy. Only fish & chips came in newspaper, and that was in huge decline by the mid 80s. Milk was delivered, but vast majority of it in non catalyst equipped diesel,or petrol vans doing sub 20mpg. Only the co op used electric. I was a milk boy but never went on an electric float. Same applies to your vaunted caravan holidays. How much fuel did your caravan pulling Mk2 cortina use? European jet holidays booming by 1980; most people didn’t walk to senior school, it being too far away; etc etc
This sort of thing is the reason I hate social media so much. This stuff gains legs, gets millions more reads than a printed newspaper article ever got, closed minds who wanted to think this already read it, then think: end of debate. I’m right. It’s an echo chamber.
Generations arguing about who is greenest using cheap sound bites does no one any favours. That said, each generation is less green than the last, clearly. This comes from consumerism, which comes from our endless need for economic growth. Until the world gets a grip on that nothing will change