As long as the person is not wearing them to work, I do not have a problem with it. Four years out of high school is not very old (22 or 23). I do not think people have to wear polo's and khaki's from 18 on. That look does not suit every guy's personality.
it's just too weird
Kids that dont want to grow up... but i guess everyone has the right to dress the way they want even if that means no one takes them seriously.