It appears that every person who has one type of taste for animated shows are reviewing this one. It's not a superb show, yet, but it does the foundation to become an animation hit. The characters, while being mostly simple and nothing write home about, are witty and entertaining most of the time.
People that are complaining that there is no plot or character development are really looking in the wrong place. This is not that type of show, at least not yet it isn't. This is only the pilot.
Simply put, don't expect the next Rick and Morty or Big Mouth from this, mostly because it is neither of those two shows. It's entertaining enough to give a chance.