No. I understand that perspective, but I believe it is short-sighted. If anything, event persistence could help to fortify a defensive position. I would be far more concerned with being able to prove what was happening, if I were receiving threats or being harassed than I would be about someone reading what I have said publicly and it somehow being used against me.
The gears of culture might turn on first order thinking, but without a central authority to go to for assistance in recovering deleted data in those situations, I think it's good that there is a relatively high chance that some things might always exist somewhere. No amount of technology will stop bad people from doing bad things, but it can provide decent people with some tools to defend themselves.
And honestly, everything I've deleted has disappeared well enough to call it gone (except lists lol). The motivation to go dig something up would be the very action I would want to be able to defend against.