Indeed so many are arguing that it really does take longer to grow up in modern societies, but it makes me wonder. If the society move up de-facto age of adolescence, should the de-jure part follow? Maybe increase the age of majority to 24 or so.. voting age, age of consent as well?
That would be likely to exacerbate the problem, further marginalizing young adults from their community. Also, the thought of raising the age of consent in this society progressing towards sexual and moral liberalization is laughable. As for voting rights, young adults have shown themselves to be a significant political force in recent elections in the US, guaranteeing the issue wouldn't be touched with a 10-foot pole.