Tolkien never pretended anything was logically consistent. He tried to make it consistent and died before he finished.
There are personal letters where he laments introducing the eagles at all, and acknowledges having to rethink them and limit their use cause they were an easy “wizards did it” grade solution to any and all problems.
Depends on which grade of nerd. The Silmarilion is basically Elves are Dicks: The Musical.
I’m all about that shit.
