I guess it's because they were expecting it to be at the level of the movies with Peter Jackson's touch. A bit too high of an expectation. However, the Hobbit trilogy was good but many has say that it wasn't great as the LOTR. Since they were expecting to be at the same level as the LOTR trilogy. The trailer for The Power of the Rings does look a bit mid. Although we shouldn't judge the series just based on a single 2 mins trailer either. Nevertheless, I'm giving it a try since I enjoyed all the movies and the world itself. I'm sure those who are complaining about it might just end up watching it anyways. As long I don't hear any whiners crying about "oh it ruined the years of nostalgia" blah blah. I see people giving that kind of treatment toward the new SW trilogy- if you're gonna be bitter about it then don't watch it or troll the fandom who actually does like it. Simple as that.