These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
However many of those fans just assumed from the previews this was going to be the case and didn't even bother to give it a chance. Surprisingly enough it had very little grossout moments, all humor is character-driven.
Ensemble Darkhorse: Browngardt's other creation, Uncle Grandpa, appears as the focus of "Secret Mountain Uncle Grandpa" Most consider it the best episode of the show.
Ugly Cute: Dingle is an ugly little booger but he's still adorable.