Animal Crossing: New Horizons is still very young, but it's already been through a series of ups and downs.
After folks started to hit the "endgame," some of the creamy faults started to rise to the top. That said, Nintendo has made it very clear that this is a live service game, and advancements will come over time: most notably, the recent addition of Leif and Redd.
On the flipside, those changes can be contentious. Nintendo recently nerfed monthly interest gains in a bid to defeat time-traveling players. Tarantulas, which I've seen a whopping two of total in all of my time with the game, also got a nerfed spawn rate.