Her perspective sums it up pretty well the views towards them:
>>5176
>I remembered why I got so tired of talking with them. They see themselves as such high and noble beings yet can hardly muster to do anything other than speak and riddles and rhymes and try to pass onto mortals warnings of the future in the most indirect and convoluted ways imaginable.
so I am certainly wondering if the author intended to put a slice of irony here and take some sort of metacriticism at making them boring on purpose.

On the other hand:
>>5179
>Kinship, Love, Friendship it goes by many names. The basic building blocks of Harmony.
>>5181
>Creatures of our nature are often said to be eternal, yet that is far from the truth.
>Especially when creatures fear the night and our ambassador. The Mistress of the dream worlds and one of the few could easily communicate with us got banished to the moon.
the author adds other aspects to their wisdom and someone might wonder if these stars could cause some sort of destiny into the world of Equestria in a passive way when it comes at establishing the core values of harmony. So the biggest reason for them to exist is that they depend and rely on Princess Luna, hence you speculated that these stars were surrounding the moon in the premiere.

But the shining star (pun intended?) here is Cosmos obviously. What I can interpret from here is how she makes nervous the unified voice of the single star speaking to her and then, slowly regressing from wise to more causal and then to raging against her by dividing their voices.This is seen in more casual questions towards Cosmos´ behaviour and Cosmos notices how they are struggling at finding one clear answer towards their discourse. With this line:

>>5186
>Can't you see it? All of you are in an inherent state of chaos and you are all trying to put a broken bandaid of a philosophical and moral system upon it but can't have a unified front because it is being pulled in a thousand different directions.