The piece is more about the publishing process and less about time travel. See a direct quote from the author:
"First of all, the topic itself is a controversial one, as made clear immediately by the work's title "Searching the Internet for Evidence of Time Travelers" (Nemiroff & Wilson 2014). It is perhaps accepted common knowledge that people who believe in time travelers are crackpots and their ramblings are not to be believed. For the record, I do not believe that traveling back in time is possible, nor do I believe that time travelers are among us."
Yeah, that's why I said that my comment was slightly off topic. It was more concerned with the tech crowd (like HN I guess) treating the possibility of FTL/time travel with such seriousness, which is somewhat out of character for a crowd that is normally pretty well-educated about science.
"First of all, the topic itself is a controversial one, as made clear immediately by the work's title "Searching the Internet for Evidence of Time Travelers" (Nemiroff & Wilson 2014). It is perhaps accepted common knowledge that people who believe in time travelers are crackpots and their ramblings are not to be believed. For the record, I do not believe that traveling back in time is possible, nor do I believe that time travelers are among us."