Just one guess, but in the "good old days" of the Internet, people would sometimes get suspicious and accuse you of trickery if you edited your posts without ex

Just one guess, but in the "good old days" of the Internet, people would sometimes get suspicious and accuse you of trickery if you edited your posts without explanation, so a culture developed of always explaining even the most trivial edits. "Full transparency" taken to its absurd extreme, I suppose.