It appears that reddit prefers that people believe it is the original author's words when they edit someone's post:
> "I messed with the “f*** u/spez” comments, replacing "spez" with r/the_donald mods for about an hour," Huffman said, indicating that the only thing he secretly altered was the target of the insults.
> "I messed with the “f*** u/spez” comments, replacing "spez" with r/the_donald mods for about an hour," Huffman said, indicating that the only thing he secretly altered was the target of the insults.
https://www.theverge.com/2016/11/23/13739026/reddit-ceo-stev...