

The article is outdated. The government has made a decision since then, they want to see 13 year olds in prison
Tidöpartierna: Straffbarhetsåldern ska sänkas till 13 år
https://www.svt.se/nyheter/inrikes/tidopartierna-sank-straffbarhetsaldern-till-13-ar
Not only tax declarations, but a lot of public info on car ownerships, court cases, personal address, and so on. “Doxxing” is not really a thing, in the same sense, here. But there used to be somethings that were completely off limits, like contents of postal mail. That used to be considered very much a private thing. Until recently.