Not everyone can live a “good” life by your definition of good, but they can live a good life by their definition of good.
Current generations realize that what older people are trying to sell them is a scam, and they’re working on building a new better reality based on their fresh perspective on what reality is.
You can look at religion through many lenses, but at the end of the day religion is just an unprovable fiction we choose to believe because it’s how we want the world to work. My belief that if you want to live a good life you should do unto others as you would have them do unto you is religious. Game theory and my life experiences support my belief, but it is ultimately an unprovable belief because of Hume’s Guillotine and the fact that my definition of “good life” is subjective.
It’s 100% possible that I’m just tricking myself into thinking helping other people is good and makes me happy, but I will still choose to believe.