Thanks to Luna to pointing this out:
On their help page it says: “Can I deactivate/delete my account? Yes. You may delete your account by clicking here and filling out the form.” The link on “here” will take you to the “nuke” page, where it says nothing of deleting, just “deactivate account”; fill the form, click deactivate, click yes on the pop up that asks if you’re sure. You’re done.