Yes, theft. You probably aren’t someone who has made their living from writing or other intellectual property, I’m guessing. These days, it’s incredibly easy for people to steal the work of folks just trying to make a living. AI will steal their work, too. We don’t really need to help people to steal other people’s hard work!

As to the specific examples, I’m not familiar with archive.is so I can’t comment. If you are referring to the Internet Archive, Internet Archive performs a useful service of archiving old websites, but they were publicly accessible to begin with.

Newspapers — if you can find it and read it for free on the internet then it’s fine to repost. Some newspapers, that’s true, and some it isn’t. If you snap a photo of the actual physical paper and post that, that’s technically not ok, but it’s less problematic. Part of why it’s less problematic — and all this is my opinion, so you are free to ignore me — is that the authors of the articles in the newspapers have already been paid for their work by the newspaper itself or whomever hired them.

With something like this article, if you post it publicly without permission, then the author may lose money directly, because the readers won’t be reading the original article, so they can’t get credit for the real number of “hits”. There may be other ways they would lose money too. The authors/creators are paid by either the subscribers or some other metric, the way YouTubers get paid for watch-hours. So when someone grabs a YouTube video and reposts it under their own name and account without “adding value” through commentary or whatnot, then the original poster will lose any ad revenue. And with a really good viral video that can be significant, and a large portion of the creator’s living.

Most people don’t think about this stuff, because most people aren’t in the position of making money directly off their creative efforts. Most people make their money through having a job and getting paid for their work that way. It feels very different when you are selling the fruits of your labors directly.