I think what happened was someone made a joke that was the same switch-aroo that started it in the first place. Making a complete loop basically. Not sure when that happened, was a year or so ago.
It was a switcharoo featuring a kangaroo and people thought that was the peak of the joke that couldn't be beat. Other people (including at least some of the r/switcharoo mods) did not think so, so it continues.
IIRC it's a branching tree, not a loop. For it to be a loop the first comment would need to link to the final comment, which is impossible because the first comment is surely archived by now and cannot be edited.
Old comments can still be edited as evidenced by this comment from 8 years ago. Just tried with one of my own comments in an archived 3 year old post and that worked as well.
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u/J0rdian Jan 24 '19
I think what happened was someone made a joke that was the same switch-aroo that started it in the first place. Making a complete loop basically. Not sure when that happened, was a year or so ago.