Thank G-d that today the Chabad movement is flourishing on college campuses and worldwide. Jewish lost souls seeking a spiritual connection now have substantial opportunities to find it in Judaism without resorting to following acolytes of other faith groups.
Dylan already informed us that he was a drug addled person. That takes a certain kind of addictive personality and certainly throws doubt on his judgment. So I wouldn't go by him or any similar person turning to drugs/liquor as an example. His confusion only shows an abysmal failure of his parents to give him a proper Jewish education. His neshomah (Jewish soul) was crying out for sustenance and, having not been given exposure to the incredible spirituality of Judaism, he felt compelled to look elsewhere.
Chabad is seeking out those deprived children of ignorant or lackadaisical Jewish parents who failed in their obligation to provide adequate religious education AND personal examples by their own behavior. Chabad is providing the correct spiritual sustenance for their neshomah to thrive, as no other faith can do, because the neshomah is designed to operate optimally following the tenets of Judaism, and nothing else.
I personally know many now-observant Jews who had their spiritual voids ignited by Chabad or by ordinary observant Jews who saw the need and devoted the time and love to do it. I recently attended one of the seven celebratory feasts following the wedding of my cousin's son. My cousin was raised as secular as you please, yet here stood a man clothed in somber black, with a full grey beard and a black fedora, surrounded by observant-from-birth friends, Torah study partners, and rabbis, all heaping praise upon him for having been raised secular, having found his way to his heritage, having excelled at learning Torah and maintaining a household true to Torah Judaism and having raised such a paragon of virtue and intelligence as his recently married son. It was a shining moment which brought tears to my eyes.