While it's an interesting article, I think he's being a bit hyperbolic in translating his local experience out to a generalization.

This isn't simply a 19 year olds experience. It is a white, suburban, middle-class, male attending a conservative university in a culturally regressive state. If nothing else, he's about as radically distant from an urban minority as you could get to the point where I'd imagine it is really impossible for him to have any perspective into other demographics and how they use these tools. I value his opinion, but it's important to take it into context.

Atleast he attempts to hedge his lack of experience in his opening statement.