Shreddit and PowerDeleteSuite were last updated years ago. I’ve used redact.dev which can also edit your comments to random strings before deleting them as “deleting” on Reddit doesn’t delete anything but only hides it from public view.

I’m now also doing a manual pass by using a Google search for “mbirth” (incl. quotes!) followed by site:reddit.com and a date filter for everything of like 10 years ago and then manually delete all the comments the deletion tools didn’t catch via the API.

deleted by creator

shreddit is a good choice for this job. There are others (can’t recall the names off the top of my head). If you are new to this sort of thing, be advised that you will be granting access to your account when you use these apps so remember to remove the access token when you are done. Of course, if you plan on deleting the account there is less of a concern here.

I’ve heard Power Delete Suite suggested as a potentially superior alternative, am planning to try it out in a few days time!