Please looks through the downgraded animations (that's the one missing star). Although the budget for this series is clearly lower, the voice actors from the movie return and newcomers too are absolutely brilliant. Much more importantly, the overall plot of this arch will blow your mind. While the series itself relies on many tropes it acknowledges it does so and plays with them.
There is little I dislike about the series, it's original, clever and funny. I would even go as far as to say there is some great pedagogic value in this series, and watching it is a rather wholesome experience.
Give this series 3 episodes to prove itself to you. You won't regret it.