Success! I confirmed that my old comments are wiped!

Over a month ago, I took my data out of Reddit before running “Shreddit” to OVERWRITE my comments with gibberish before deleting them.

Today, I was able to get a second copy of my data request and confirmed that all of my comments are still gibberish on Reddit’s end, and DELETED when anyone else tries to view them.

I think overwriting old comments and posts is critical before deletion, because Reddit will still retain those comments in their entirety, even if they are “deleted” for other users.