The whole (I'm not spoiler alerting this because this is such a garbage story that I don't mind spoiling the surprise) "Sauron was just some dude that Galadriel randomly ran into after she jumped off the boat" thing was an amazing shark jump.

, like a lot of creativity-deprived techbros, is a very firm absolutist in Joseph Campell-like story cliches, so he had to have a "friend that becomes a traitor" moment because his own mandates said so.