That's one diddle that can't be undone. Does the author really think deleting his old posts is going to somehow cover all the cached copies of his data? Not to mention all the little picadillos in the metadata Axiom has on him that they gleaned from said data? Articles like this make me fear for tech journalism.
It can't necessarily be undone, but if you're among the people who is skeeved out by surveillance capitalism, you can at least try to reduce future level of exposure going forward.
Also, if you're worried about the long-term psychological impact of social media, with all its dark patterns designed to get you to spend more and more time distracted by their sites and apps, then all you really have to do there is switch the distractions off. Deleting one's Facebook account isn't the only way to do that, but it's certainly an effective option.
