This is true.
Then there are shrinking families - no siblings to fight with or get support or advice from, absentee parents working or divorced, one cousin 3000 miles away, people even scared to let their kids out into those dangerous streets - they're short on means for learning social skills.
Less kids and they're spoiled. Who had their own tv and phone in their room way back when? There was one of each and the whole family used it.
Speshul Snowflaking, where everyone's a winner so they won't cry and nobody loses because they're all taught to fail together because competition is a strain on the body, brain, and delicate feelz.
Fighting is bad, whining is good. Kids getting PTSD from just being called "boogerheads." In their twenties not even trying to get jobs when back in the day teens got Working Papers so they can work before 18. Forget about Jr delivering papers at 6am, mowing neighbors' lawns for a few bucks.
And with the porn, good gosh, middle school kids are furries and into Anime porn? They've never had any friends, let alone dated, yet they're that bored with sex already even though they've never done it?
No will, no drive, no ambition, no guts, no spines. Resources declining, things are gonna be way rough when they're seniors, and they've been rehearsing for life as gelatinous globs with no memories to leave behind so that anyone can even know they were ever alive. And this is just on an individual level, as the world around them shrivels and dries, no effort from them to keep it alive.
When the world ends, will there be anyone willing to notice?