According to the r/UKpolitics moderator that got banned, one of their comments was manually edited multiple times (first to change the content of the comment, then to fix typos in previous edits)[1]. Reddit hasn't refuted this.
From context I've seen elsewhere, my guess is that the mod posted the text of the Spectator article in its entirely as a comment on their submission. Then, someone edited out the sentence which contained a passing mention of Aimee, but in a nongrammatical way. Then someone went back to fix the edit, and a little while later the comment was full-on deleted (so now it shows up as [ Removed By Reddit ]) [2]
From context I've seen elsewhere, my guess is that the mod posted the text of the Spectator article in its entirely as a comment on their submission. Then, someone edited out the sentence which contained a passing mention of Aimee, but in a nongrammatical way. Then someone went back to fix the edit, and a little while later the comment was full-on deleted (so now it shows up as [ Removed By Reddit ]) [2]
[1]: https://www.reddit.com/r/ukpolitics/comments/mbytxw/_/gs0wor...
[2]: Visible from the mod's user page but not on the submission itself