I don't see the contradiction between rejecting those mass-market items and wearing second-hand clothes. Everyone has different priorities of where to spend their money.
It could even be a matter of principles. Anything produced at scale, especially clothing, exploits cheap labor. That's something these people may want to avoid. It's also bad for the environment to buy cheaper items that will likely fail quickly, and if old clothes are still usable then why waste resources on new ones?
The holier-than-thou attitude that the other commenter mentioned is still what I believe is the reason for hipster hate. And it's not always unwarranted. If someone becomes a hipster because they want to feel superior, then that certainly does make them annoying.
It could even be a matter of principles. Anything produced at scale, especially clothing, exploits cheap labor. That's something these people may want to avoid. It's also bad for the environment to buy cheaper items that will likely fail quickly, and if old clothes are still usable then why waste resources on new ones?
The holier-than-thou attitude that the other commenter mentioned is still what I believe is the reason for hipster hate. And it's not always unwarranted. If someone becomes a hipster because they want to feel superior, then that certainly does make them annoying.