https://github.com/j0be/PowerDeleteSuite

You can backup and delete or modify all your old reddit content. 1,500,000+ karma and 11 years of my content is being deleted right now. Reddit's gold is user content: If you've left reddit, don't leave them your content.

While it's true that yes, deleting content isn't going to delete it from their servers and they'll still be able to utilize it, be aware that when they get caught doing so the EU and GDPR will fine them billions. Let's set them up for a good one.