Lord of the Rings Series -- Amazon
No it doesn’t
Tolkien’s words on the page still exist - therefore ‘canon’ does not change
This is an adaptation
Right.
So if you're looking for a canon-accurate adaptation, this is not for you.
Instead of 'change' canon, maybe I should say 'ignores' canon. Because you're right, canon doesn't change.
Take lineages, for example.
Elrond is a direct descendant of Finwë. As Elf-Lord as Elf-Lords get.
Galadriel is a full generation older than Gil-Galad. High King or no, he doesn't
order Galadriel to do jack.
Having Clebrimbor and Elendil alive at once is like doing a Bible adaptation where Abraham and Joseph chill out together.
Worse because in this analogy, Celebrimbor is Cain's grandson.
Just a few examples of where RoP diverges from established canon in huge ways.