I don't understand this line of thinking. I see it a lot on HN these days, and every time I do I think to myself "Can't you realize that if things kept on being erased we'd learn nothing from anything, ever?"
I've started archiving every site I have bookmarked in case of such an eventuality when they go down. The majority of websites don't have anything to be used against the "folks" who made them. (I don't think there's anything particularly scandalous about caring for doves or building model planes)
The truly important stuff exists in many forms, not just online/digital. Or will be archived with increased effort, because it's worth it.
If you don’t want your bad behavior preserved for the historical record, perhaps a better answer is to not engage in bad behavior instead of relying on some sort of historical eraser.
BUT, it's hard to learn from history if there's no history to learn...