We should not repeat mistakes and if its the end user that is committing same mistake again and again then the UX should be changed to make it difficult for user to perform such actions. Make the user apply some cognitive thinking before he can do a detrimental action and make the action obscure. For e.g. we are a filesystem company and "Trash delete" is a detrimental action, over past few years I had several tickets where user accidentally clicked Empty trash and deleted all his files or he clicked Delete Permanently instead of Restore. He was able to do all this because in the UX the actions are close to each other There are users who did this and immediately created tickets under panic and some even blaming that system did delete instead of restore. I know in UI it may look bad but I have seen several companies solving this by making user think twice before invoking detrimental action like asking a captcha or make the delete and restore flow differ...
