The most obvious image of a laughable hipster should be a half-time art-school student whose parents are going to provide him/her with a cushy job and/or money so s/he doesn’t really have to work but can just learn some stuff, party/hang out, make some art, and do a little-of-this little-of-that. Maybe have his/her own record label or vanity company or charity or eat instagrammable food or wear cool clothes or whatever, and be beautiful.
Hey, that actually sounds like a nice life I would like to have for myself.
Since art and learning and performing and consuming of those kinds of things are ends in themselves, it’s like this stereotypical character already has what the rest of us would use up our potential leisure time working to be able to afford. In that case the hipster hatred can be just a form of envy.