This is victim blaming and only reinforces the status quo. The way things are isn't the way things have to be. We can change the rules if we work together. Or we can give up and blame the victims.
"Changing the rules" can reduce data availability, probably well enough for most purposes, and that's good. But it's simply strictly true that once you publish something, you cannot assure it's unpublished. And everyone should know this and act that way.