People didn't wear seatbelts in the 1950's. Infant mortality was 10% before the age of 1 in 1910. At the same time, homeless children would roam the streets of cities and orphanages were common. The #1 form of surgery back then was amputation.
To make such a statement implies how little perspective one might have for how hard life was, the risk and tradeoffs being made, especially when there were unknown - and especially for 'how good we have it now'.
I'm not even that old, but I have the lived experience from my grandparents who were born on farms without electricity and I believe without a doubt that we have crossed the line into 'civilizational wealth'. We are really rich for the first time in history. Unequal, yes, but even lower-middle class people have access to vast material bounty: actions, travel, decorative clothing, choices, opportunity, education, amazing produce throughout the year, entertainment, technology, delivery, amazing health care innovations. Heck .... people are even less afraid of getting shot these days because we know how to stabilise and save people. Getting 'shot' used to mean 'pretty much going go die'. Even 'heart surgery' is now done on an outpatient basis these days like getting an oil change.
'Millenials' have already let loose Facebook and other completely destructive technologies, and are taking absolutist views on necessarily complicated things like gender identity (and more) and I'm 100% certain that history will come back like a wrecking ball on at least those things, of course it's already happening with Social Media.
The issue with lead is hard to fathom, it's still a bit grey, I'm wondering what the effect of some other things are going to be i.e. micro plastics, and the steroids they use on livestock etc..
I'm not 'organic' by ideology but I'm wary that there's a lot of risk in those kinds of things.
And it goes further: lighting in the cities all night, and noise pollution in the city and with our gadgets. It should be mostly dark and quiet at night.