I'm not sure why you would put any information about yourself on a public forum and expect it to not be permanent. Do people actually have that assumption? I fully believe that everything said here and anywhere else on the internet is being slurped up by some random guy/org's bots.

That's not paranoia btw, believing otherwise would be incredibly naive. So no, I am not upset and I don't think I should be upset. I think you are the one with unrealistic expectations. If it's on the internet it is permanent, gdpr be damned.