dangerous come on... nothing will ever change the source material and the canon. The books will always be there, untouched. They are not going to be rewritten and any person who decides to research tolkien's work after this show will see how amazon doesn't have to mean canon. Heck, this game itself is not canon and after mordor is basically MoL's fanfiction, but because it's lotro, it is all well and good? double standards.
What are you afraid of exactly?
You can't dictate how people can or cannot perceive the IP, be it from books or tv shows