You trust Bruce Schneier because he's a popular figure. You said it yourself: "Tom Nichols is a nobody" due to a fatal lack of PageRank not helped by a non-unique name. While I admire Schneier greatly and am thankful that there is somebody like him working to popularize cryptography, computer security, and related social issues, there are countless others equally or better qualified to speak out on topics of cryptographic theory whom you (and I) wouldn't recognize at all – but actual domain experts would.
I hope I do not really need to spell out why popularity contests in the court of public opinion are not a reliable avenue for deriving knowledge.
As for Tom Nichols?
> Thomas M. Nichols is a professor of national security affairs in the National Security Decision Making Department, where is also the Course Director for Security, Strategy, and Forces. A former Secretary of the Navy Fellow at the Naval War College, he previously taught international relations and Soviet/Russian affairs at Dartmouth College and Georgetown University. He is a former chairman of the Strategy and Policy Department at the Naval War College, for which he was awarded the Navy Civilian Meritorious Service Medal in 2005. He holds a PhD from Georgetown, an MA from Columbia University, the Certificate of the Harriman Institute for Advanced Study of the Soviet Union at Columbia, and a BA from Boston University.
- http://www.usnwc.edu/Academics/Faculty/Thomas-M--Nichols,-Ph...
- http://belfercenter.ksg.harvard.edu/experts/1818/thomas_m_ni...
But hey, what worth is the combined judgment of the peers who bestowed these positions and honors upon Nichols, against the opinion of one armchair epistemologist on Hacker News who makes astute verdicts based upon the appearance of one's blog and how well one ranks on Google...