This is pretty typical for an early access game from a tiny dev team. I think the stuff they've released so far is so good that it attracted a lot of people who aren't familiar with small, unfinished games, though. People who played Witcher III, Assassin's Creed, and Skyrim, and think every game is like that. I got almost 200 hrs out of Valheim even in its unfinished state, so I think if anything, the devs should have ended it where it is as opposed to adding the next three zones.