[Tar Elenion]

The mythological creation of the Sun and Moon from the Two Trees is not present in LotR or the Hobbit.
Tolkien deliberately revised the Hobbit to have an extant sun and moon while the High Elves were dwelling in Aman, before the return of the Noldor.
Durin wakes with a moon, and is able to capture moonlight and sunlight in lamps.
Galadriel sings of her time in Valinor, beyond the sun and moon (not before the sun and moon). Beyond is probably a reference to the Dome of Varda.
Gandalf says the Ents were walking in forests, with a moon overhead, before any tree was cut down, or iron found.
In the mythological tale:
Durin woke thousands of years before the Sun and Moon.
Galadriel could not have sung of leaves in Valinor, beyond a sun and moon (which did not exist until after she left).
Iron was found and trees cut down long before the Sun and Moon were created, in the myth version.
These are consistent with the (so called) 'round-world cosmology' (deliberately so in the case of the Hobbit).

Hence a contradiction to LotR and The Hobbit.
(As Amazon only has rights to the Hobbit and LotR, I do wonder if they had to get permission from the Estate to refer to the 'Sun and Moon creation myth', or if the show-runners are ignorant of the fact that the creation of the sun and moon myth is contradicted by LotR and, quite deliberately, The Hobbit.)