Many of us here have Deviantart, and I'm sure you've heard the news (if you haven't, check this https://twitter.com/endwa1ker/statu.....36936508370944)

Since DA is a bs site, you literally can't mass delete deviations, but I found a little app for it that can help. It doesn't delete EVERYTHING at once, but it deletes like 100-50 per deletition, each one taking a minute or two.
Check this tweet for links and such https://twitter.com/KyleesBasement/.....54744474882050

I encourage you to share it so people can avoid desactivating accounts before deleting their art (no one is sure if desactivating an account fully deletes everything)