bbPress.org

I’m just a bbpress user who helps out here, so cannot comment on whether it should be core.

There was and is much debate about whether you can claim anything you put yourself into public view (eg in a topic or reply, or wordpress comment ) as personal data – and then demand it be removed.

for instance https://law.stackexchange.com/questions/28276/are-internet-forum-posts-considered-personal-data-under-gdpr