I have no idea how they handle it, but most of the people who have talked about having trouble used tools to overwrite comments then delete them before they got rolled back multiple times. If it was that simple the well known best practice that people have already followed wouldn’t need to be redone again and again because theoretically you edited the comment twice already and the original content should be unrecoverable, yet it still appears to be rolled back to 2 states prior by the complaining parties.