People have very different ideas of where that degree is, though.
Let's take the Toga as an example, as >>180554608
suggests. Are they angels? Psychopomps? Some other anthropomorphic personifications? They barely feature in the story at all - they're almost like stage-hands that the audience can see. They communicate using a strange kind of sign language that can be written in an almost winglike script, to fit the show's strong thematic core. Is there too much left to the imagination, or not enough? If they were supposed to be scary, I'd say not enough is left to the imagination. They communicate intelligibly, in a language people can in theory learn, as Rakka proves. They appear helpful, within some set of rules we aren't privy to. So it's not that they're just a big box labelled "mystery secrets - please don't open" - rather we're given just barely enough to feel that they, like the rest of the town, are in some sense wholesome and good. That is, in my mind, masterful.
But yes, it's frustrating when you don't like something about a show and people just say "that's the point, 2deep4u." It'd be nice if there were some way past that but sadly I don't know one.