I agree with everything in the video completely. As someone who is pretty knowledgeable about the lore (i.e. beyond just the trilogy), I was kind of turned off until I actually played it, since the premise seemed kind of stupid and very non-canon. But ultimately, it's just too much fun to pass up. Skip all the story parts because it's awful, cliched writing, like you'd come to expect from almost any video game these days (with a couple exceptions, like the Witcher series), and just chop up the vast majority of orcs in Mordor until it gets old.