Actually alot of that stuff was still the case in the 1980s I was born past your cut of date by a few years and that describes me for the most part what you said I never ate worms though and there are no street lights in a forest.And my mother never smoked in her life and she does not really drink(that is only bad if the mother is a total alcoholic anyway the baby getting harmed)
I agree with your point but just because kid these days have exposure to all this newer stuff it does not mean that they are all fat and lazy it all depends more on ones parents and how you grow up more so than your birth generation that effects the kind of person you will be.If you have bad parenting you have a good chance of being a moron later in life. or you will see their failure and become a better person.
For example a guy that lived down the road form me as kid his parents always got him out trouble in school/with the law they always got him onto the football team but he could not muster it when he got to college without their support now as an adult he seems unable to keep a good job I wonder why.
I on the other hand I never got bailed out by my folks for school troubles and never got in trouble with the law in the first place and I have had several great jobs over the years.