I’m a fan of irrevocable confirmation dialogs with scary and non-mistakable requirements like “type I HEREBY ABANDON THE FILE IMG0123.PNG AND WILL EAT SIX LIVE RATTLESNAKES IF IT EVER OCCURS TO ME THAT I MIGHT WANT IT BACK to continue”.
reject sixty two thousand four hundred and six records
into a modal with paste disabled and a red background.
You can't fix stupid, even if they're paying customers.