Sort of yeah! I got used to it by now. At the local hackerspace we have a voorzitter, penningmeester, and secretaris -> president, treasurer, and secretary I think would be the English terms. All sounding fancy and together they're the board. But they don't dress up or anything, it's just terms that are commonplace for small organisations here, in Germany (like with Codeberg) as in the Netherlands (like our hackerspace). In practice people just do as they see fit, the titles are often just a formality and not taken seriously unless you can use it to teasingly redirect work onto another person :)

That's normal for any "vereniging", "Verein", union or association. My VVE (HOA) has that too. So did both of the student unions I've been a member of. There are organisations for playing games that have the same structure. As soon as you've got any kind of money or responsibility involved, you need some governance structure, or you're just giving your money to some guy.