I called your statement moronic, not you. I will not be apologizing for doing so. If I say something idiotic, calling it such does not entail that I am an idiot.
There may or may not be a class of problems that only induces anxiety, but your example is not a member of that class even if such a class exists. Trivially, I can address the disconnection between people in our technologically mediated society by going out and meeting people in person. If I write a lament about that disconnection, I'm not speaking out solely to induce anxiety, I'm doing so to urge people to turn of their computers, to quit starting at their iPhone, and to go out and make personal connections.
More specifically, Ms. Bracy is not, in any sense, suggesting that the problem she identifies is insoluble, or that it cannot be addressed by individuals. She says, in part:
What if, instead of imploring people to vote on Facebook’s privacy policies, we were pushing Florida lawmakers into fixing the state’s broken voting system? What if prison reform advocates could speak as loudly as the anti-SOPA activists?
More generally, her post is a plea for the participants of the Valley startup scene to look to address problems outside their own, quite limited experience. That's not anxiety-inducing, that's an exhortation. The fact that she doesn't link to a kickstarter for a specific project doesn't undercut that point. It's easy to imagine someone in the Valley casting about for a good idea to decide to say to themselves "We don't need another socially networked tastes-organizing app. What problems are worth solving in St. Louis for people who don't have smartphones?"
You have an extremely limited view of 'agency' if you think Ms. Bracy's post exists solely to make you feel badly.