Bomb squad movie where the bombs are wired to Jenga towers.

It applies to comments and posts to the extent that they are attributed to you, about you and/or their content is specific enough to render you identifiable. In practical terms, this means that a data controller can in most cases keep the content of your post by anonymising it, which is why when you delete your account it shows “[deleted]” in place of your user name above your old posts. If the content of the deleted posts, even in aggregate, allows me to find out who you are, then you would have grounds to insist that the content be deleted (or sufficiently anonymised).

Source: I was a DPO for 5 years.