Now, generalizations can be faulty, but whether they ring true is a good proxy for their usefulness. And this point in TFA rings very true. Beyond just Hacker News or other social media, look at the blogosphere, industry "thought leaders", VCs, organizations like the EFF, startups, tech companies and their executives (and if you look closely, their lobbyists) on any matter involving intellectual property rights. The average reality that emerges is pretty stark and can be summarized as "what's mine is mine, what's yours is everybody's." Sure, many of us would disagree with that, but that is what the ultimate outcome is.
As such, I read that point not as singling out a specific set of people, but as an indictment of the tech community, and indeed, the industry as a whole.