There’s a vast difference between someone archiving your comments and not being able to remove content from a public facing position on the site where you originally posted it. I don’t find the “…but anyone can archive it” argument very compelling. For example, on reddit it was quite easy for me to delete a comment, and from the point of view of most users, that comment was gone. Same with Twitter, or Facebook, or Tumblr, or the vast majority of forums. This has been normalized since the earliest days of the internet, and archiving/screenshotting/downloading content aside, most of us have come to act accordingly. Not that we don’t take proper precautions, not that we don’t treat content as if someone could grab it, but again this is quite a different scenario.

I think we need to be realistic about the fact that this forum (Lemmy in general, not this instance specifically) has some uniquely troubling privacy concerns, even by fediverse standards. I wish the devs would address this, but they don’t seem willing.

I do agree with you that people need to be extra careful about what we write or share on this forum, even moreso than in other forums we may have used in the past.