What the angry teenager tries to convey maybe is that most adults have fake hobbies. By that I mean hobbies that are passive and mind numbing. I mean most adults in my country have "sports" as hobby which basically consists of watching their favorite team and other teams on tv, reading sport newspapers, talk about sport news with their friends and maybe play soccer or basketball with friends once a month. Sometimes those people laugh at me for skating in my 27s and my response is, tell me one thing about your life that is better than skateboarding, and they realise that they are assholes and things become very awkward for them. People who actually have hobbies (Movie making, having a band, mountain biking) are a minority and they never laugh at you because you skate in your late 20s, because they take joy from what they do in their free time and can totally understand that it is the same with skating.