It is true that by this definition, young people today are mostly not very cool. On the other hand, it may be that 'being cool' is something that a certain earlier generation or two significantly overvalued.
I mean, I don't think so. But maybe I'm just too old to appreciate the joy of singing along to whatever the current corporate-generated pop songs are, in a large crowd of people who are just like you in nearly every way (but "diverse!"). I never meet anyone who is just like me, and rarely meet anyone who is approximately like me. Maybe there's something to be said for the experience.