Short answer: No. He was evil, but he had (inadequate)
good to balance some of it out. The others didn’t.
Feanor was a tragic figure. Morgoth, Sauron,
Smaug, Ungoliant, and Shelob were not, because these others simply acted as
expected. However, Feanor had potential to be the greatest Elf that ever lived,
and for a while he was living up to that potential. He did not make the silmarils with the intention of
causing the greatest bloodbath of all time!
Yes, he had his character flaws, but without Melkor’s
quiet lies those flaws would never have amounted to much. Without Melkor
murdering his father and stealing his prized creations, Feanor would
not have rebelled against the Valar or killed anyone.
Unlike the others
mentioned, Feanor needed “help” to be evil. Ultimately he was responsible for
what he did, of course, but his biggest flaw was reacting too strongly to what
Melkor/Morgoth told him or did.
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