People are free to like the characters they like, but others must understand that there are reasons for choosing one character over another.
People…
It says that she and Celestia were to rule together, equally, to maintain harmony and balance, yet her work was ignored while Celestia’s was enoyed and lauded. When one sister is celebrated while the other is ignored, is that not cause enough for jealousy?
While the overview does not give explicit detail about her descent into jealousy and bitterness, it does nothing to support Celestia either saying only that she tried to reason after the fact.
Is Luna guilty of the jealous, under-appreciated sibling cliche? Yes. This is a relatable situation though, one that people can sympathize with. Celestia’s only defining characteristics are that she is motherly to a few directly, and that she is good. She has no flaws, and while to some that is appealing, it is not relatable. Luna is established as a character who is flawed and dynamic, even if she has had little screen time.
I’m going to make one last point and then I’m done arguing with you because you’re just presenting the same points over...
Being “too scary and misunderstood” is not a flaw. Being prone to jealousy enough to let it consume oneself is a flaw....