Please remember that this was exactly the behaviour promoted on Lemmy when the API drama ensued that drove many users with third party apps away from Reddit.

Not really for the comment in the picture, that one is too old, but many users here tried nuking all their comments with various methods. Some got reversed back by Reddit, others remain deleted.

Most of that knowledge was only deleted but not saved in any other way, which is why I have always been negative about this approach.