What's the sense in asking for examples? If one person sees ubiquitous cultural decay and the other says "this is fine," I think the difference is down to worldview. And for a pessimist and an optimist to cite examples at one another is unlikely to change the other's worldview.
If a pessimist said, "the opioid crisis is deadlier than the crack epidemic and nobody cares," would that change the optimist's mind?
If a pessimist said, "the rate of suicide has increased by 30% since the year 2000," would that change the optimist's mind?
If a pessimist said, "corporate profits, wealth inequality, household debt, and homelessness are all at record highs," ...?
And coming from the other side, all these things can be Steven Pinker'd if you want to feel like "yes there are real problems but actually things are better than ever."
There was a book that said something about "you will recognize them by their fruit." If these problems are the fruit born of our culture, it's worth asking how we got here instead of dismissing it with "What do you know that the anthropologists and sociologists don't?"
