> Certainly I have some level of expectation that if I delete something, it may very well actually be gone, right?
Really? For me this is like saying that just because you stop actively publishing a book, people can never quote it again. That's clearly not true, right?
Edit: or because I didn't distribute recordings of a speech I made, newspapers can't quote me
But I am not, nor do I aspire to be, a public figure. For notable people, and most certainly politicians, I might tend to agree with you, but not for the general case.