[rcxdude]

For a while it seemed that while this was true, edits were at least destructive: so a lot of mass-deletion tools would edit the comments, then optionally delete them. But I wouldn't be surprised if this is no longer the case (TBH, making the edit history of comments public is a good idea in general).

[Tao3300]

I disagree. Making edit history public would turn the discussion into a total shitshow. Reddit would drown in stuff like: "I see from your second edit you said ... so clearly you're a ignoramus and a bigot."