It's slow with lots of comments but does exactly what it says on the tin. Generates a random string and saves the comment then goes back over them and deletes the comment.
You have to keep in mind there are lots of services around designed to cache deleted comments so this isn't a perfect solution but it's better than nothing.
Confirmed working as of 2022-02-18. Make sure you use it on https://old.reddit.com/user/ not the new interface.
It's slow with lots of comments but does exactly what it says on the tin. Generates a random string and saves the comment then goes back over them and deletes the comment.
You have to keep in mind there are lots of services around designed to cache deleted comments so this isn't a perfect solution but it's better than nothing.