It is considered personal data by the likes of the EU, the issue however a pesky little thing called the Swedish Constitution, specifically chapter 2 of the "Freedom of the Press Act" which basically states, in very simple terms:

1. Everyone(1) shall be entitled to have free access to official documents.

2. Official documents are all(2) documents held and produced by the authorities.

(1)=Everyone includes everyone in the world, you do not have to live in Sweden or be a citizen and you do not have to identify yourself.

(2)=Some restrictions apply (natsec, medical, etc).

In short, most government databases are databases of "official documents", including the citizenship registry maintained by the tax authorities.

Downside: All the mundane information about you is public property; address, birthdate, tax records, school grades, drivers license, passport photograph, martial status, court cases and pretty much everything else you can't think of.

Upside: Applies to all politicians as well.

Yeah, you can either assume your worldview is the only one that exists, then seemingly not understand why certain decisions are made or how things work elsewhere, and everything looks stupid and doesn't make sense to you. Or you can try to understand things from other perspectives, and maybe actually understand the reasoning behind it and what it means.

What is and isn't personal data is subjective, regardless what "truth" you believe you're sitting on. I won't claim you're right/wrong as there is no such concept for subjective things, I suggest if you want to understand instead of wave your hands around or whatever you're doing, you'd try to see things from another's perspective and forgo dogmas.