What the fuck is this?
Tongue in cheek, self referential and self deprecating with a dash of realism.
Made me chuckle.
So yes, I think he has some issues due to this particular expression of his sense of humor. It's not like I'm scared away by the language used - it was more cringe-inducing than anything.
In some web development circles Bootstrap has become a divisive topic. Statements like "You have no business being a programmer if you use Bootstrap", "Bootstrap is ruining the web" and "You shouldn't use web design and Bootstrap in the same sentence" are fairly common.
In that light, the 'web hipster...' statement is more a means of fending off criticism than anything else.
A web hipster has no definition. But you could put two and two together to realize, a web hipster uses Bootstrap because it's the most popular front-end framework. And anyone who uses it "like a whore", means you've gotten messy with its insides.