It's absolutely accurate that `kids these days` have grown up in a different environment than `grownups these days` than the same demographics from 50, 100, 200, or 1000 years ago.
The "kids just lack manners these days" should also be separated from more detailed criticism.
That whole thing about denying that decadence is even possible is so comically a symptom of people being part of said decadence not wanting to admit it.
From my other post:
Overall, when the parents lose control of the child, the culture takes over parenting. When the culture is ridiculous, the child grows to become a ridiculous adult and won't know it and possibly even defend it.
Of course, their ideals will most likely differ from your ideals. In addition, even where multiple people might share abstract ideals, their ideas about how to effect these ideals will often differ.