Sadly it seems that some youngsters are interested in self. Though I believe it can be beneficial for people (young and older) to be assertive. It is important for us to know, accept and make use of assertive meaning :- I'm ok, your ok. As in mutual respect.
Disrespect is disrespectful. Manners are polite, and welcome. Respect is Welcome. Reciprocation (in regards to consideration, Kindness) is Welcome, and in the past it was the 'norm' (normal), was to be expected, and very much encouraged by parent, elders, etc.
Unfortunately some seem to place self well above everyone else. Rather than having a Philosophy of
Sharing, Caring, Kindness, etc.
Yes Parents are Responsible :- Parental Responsibility. But maybe those in Power NEED to Lead by Good Example. Seems that youngsters emulate Royal Family, Celebrities, Rich.
Materialism, Wealth and Power and Control seem to be priorities for some.
Hope things Change for the Better.