It`s not true, by the way. It depends on a person basically, but there are many distractions for the youth, so it could be the reason.

due to technological innovations and advancement youth are more interested in pleasure than academic work because from recent statistics over 79% of youth in the world at large are more interested in plesure than academics

Upbringing matters alot in how the youth of today are been mode and form. The surrounding has alot to teach and tell the youth body chemistry to exhibit. And parent daily and unseasonal encouragement also go along way in gaining this children towards academic sides if everyone would be derail as a result of the global juvenile deliquency that is on rampage.