Sci-Fi Log #4: Who's Cribbing? and Time Travel

For my next sci-fi log, I re-read a short story called “Who’s Cribbing?” by Jack Lewis. The story, written in a letter format, is about Jack Lewis himself, an aspiring writer who wants to get his literary works published in a sci-fi magazine. However, the publishing companies keep rejecting his writings because they believe that he his completely plagiarizing from a well-known author named Todd Thromberry. Lewis has never heard of this 'Todd Thromberry'. He tries sending his work to other publishing companies, but to no avail. The companies say the same thing as the others, telling Jack Lewis that he has copied Todd Thromberry’s work. In the end, it is discovered that Todd Thromberry is the one plagiarizing Jack Lewis' work. Lewis proposes a theory that Thromberry somehow to crack the space-time barrier and is going through time to make it seem like Thromberry was the excellent writer and not Jack Lewis. The companies don’t believe him at all.

What I want to know is why Todd Thromberry would go through so much trouble just to make himself an author of stories submitted to a simple sci-fi magazine! If I were given the opportunity of time travel, I know for sure that I wouldn’t make myself the author of a few short sci-fi stories for a magazine. If I could, I would go back to major points in history and just watch them all happen, and not tamper with anything that could possibly change the course of history.