are young people failing to 'grow up'?

To understand 'nuance' is to understand those little differences:

a very small difference in color, tone, meaning, etc.nuances [=shades] of color/meaning

"He listened to the subtle nuances in the song."

"a poem of little depth and nuance"

Nuance Definition & Meaning - Merriam-Webster

We seem to be losing them:

Oliver Burkeman has been concerned for a while that Nuance has been vanishing from public discourse.
He speaks to Professor Susan Neiman, author of Why Grow Up? About how difficult it can be to develop the skill of nuanced, critical thought, and how doing so may not just be an act of growing up, but as an act of resistance against a world designed to keep us infantilised, and our thinking simplistic.

BBC Radio 4 - The Death of Nuance, Losing My Nuance

Here's more about her book:

The philosopher Susan Neiman argues that the absence of appealing models of maturity is not an accident: by describing life as a downhill process, we prepare young people to expect - and demand - very little from it. In Why Grow Up? she challenges our culture of permanent adolescence

why-grow-up

Why Grow Up?

Here's a review of her book:

But the real virtue of this short, sometimes frustrating book lies in its insistence that thinking for oneself is a difficult and lifelong undertaking, in its genuinely subversive defense of philosophy in an age besotted by data. You don’t have to read Kant to be a grown-up, but it couldn’t hurt.

‘Why Grow Up?’ by Susan Neiman - The New York Times

It's a question a lot of people are asking, though:

Lifestyle Writer Rachel Hosie ponders whether if we're living longer, it's justified to act like a teenager into our adult years

Seven signs you're stuck in permanent adolescence | The Independent | The Independent

Extended Adolescence: When 25 Is the New 18 - Scientific American

Here's another view:

A provocative look at the rise of youth culture, the worship of perpetual adolescence, and the sorry spectacle of adults shirking the responsibilities of maturity. Firebrand conservative columnist Diana West looks at the mess America is in and wonders "Where did all the grown-ups go?"

The Death of the Grown-Up: How America's Arrested Development Is Bringing Down Western Civilization - Kindle edition by West, Diana. Politics & Social Sciences Kindle eBooks @ Amazon.com.

There's a specific 'syndrome':

While people with Peter Pan syndrome can and do become adults, they are stubbornly resistant to taking on the responsibilities of adulthood and adopting social norms associated with growing older.
Peter Pan syndrome, which is sometimes called failure to launch, is not a clinical diagnosis.

GoodTherapy | Peter Pan Syndrome: When Adults Refuse to Grow Up

Overprotecting parents can lead children to develop 'Peter Pan Syndrome' -- ScienceDaily

8 Reasons Some People Refuse To Grow Up Into Mature Adults

To finish, here's a look at how the world has changed for young people:

Five indicators are commonly understood as the markers of adulthood: finishing one’s education, leaving home, finding work, finding a life partner, and having children. Although many young adults reach the legal age of adulthood before they achieve these five markers, and others do not choose to reach them all, many still consider some combination of these benchmarks to define what it means to be an adult. Compared with the mid-20th century, young adults in the United States appear to be taking longer to reach these markers today. Fewer young-adult men ages 16 to 24 are settled into permanent jobs, and fewer men and women are married with children today than in the 1950s... 

Young adults are not less mature today than in the past. Neither are they necessarily more self-centered. A new developmental stage is not necessary to account for the extended time that many youth need to make the transition to adulthood. We are not the first researchers to challenge the idea of “emerging adulthood” as a distinct life stage, but we have new historical data that help us understand when and why youth feel they need more time to become adults. Our findings tell us something important: When young adults take longer to achieve the markers of adulthood, it is not that something has changed about them; it is that the world has changed.

The Real Reason Young Adults Seem Slow to 'Grow Up' - The Atlantic

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