If you're a Tolkien nerd like me, you've watched Galadriel get retconned a bunch. The character Galadriel who was introduced
The Lord of the Rings was expanded some and had background material added in
The Silmarillion. Then there was a whole chapter centered around Galadriel and Celeborn in
Unfinished Tales that rewrote a bunch of her past (and this is where she got retconned as the prime mover of the anti-Sauron alliance of the Second Age).
Heck, the Galadriel in the footnotes at the end of Return of the King doesn't entirely jibe with the character we met in the text.
If you want a good thumbnail of how her character evolved over time,
this essay is a good encapsulation.
Seen in this light, some of the sperging around the Amazon Prime series has been pretty droll.
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