I agree, the updates are very slow and I would have expected faster updates, but the reality is that it's a small team of people and they probably don't dedicate their lives to the game.

I am still happy that I got hundreds of hours of enjoyment out of a game that cost relatively little, and it still feels like a full game at the moment with all of the biomes and bosses. The extra things are like the cherry on top, if you think about it that way it's not as bad.