I agree with this. A lot.
But I don't think that Tommy is necessarily wrong. I think he can get a little more negative than a lot of people like, but I think that he does a decently good job at keeping himself level with his videos, which makes them fun to watch even if I don't always agree with him. I also think that he's absolutely right that most people seek these analysis videos for affirmation, not for pure analysis. I know that I have fallen into this trap.
I find it funny that he used a clip from one of Digibrony's season 4 videos (the one about Daring Don't, which was an episode that I didn't like very much either). "Am I getting jaded?" he asked. At the time, since I didn't like the episode much either, I didn't think so. But as the season progressed, that quote came back to me, and I felt like Digi was looking for too much to dislike, and he was letting what was happening in his own personal life influence his opinions on certain episodes. In short, I didn't think that they were fair analyses. And that's what really bothered me about him as I watched his videos. Eventually I just stopped because I wasn't enjoying his "analyses" anymore - they were more like bitching if you ask me.
So that's why I agree that tone and approach in making these videos makes a big, big difference. I think that it's good that Tommy is wondering these things himself, because I think that it helps keep him grounded. But overall, I think that analysis videos have an important place in the fandom, and as long as the people creating the content don't allow themselves to become too positive or too negative, it serves an important purpose, and that is the role of keeping the rest of us on our toes and remembering that scrutinizing our favorite thing in the world doesn't mean that we think that our favorite thing in the world is bad. It just means that we know that it can be better.
Oh, and if people in the community would just stop believing that analyzers like Tommy hold any kind of authority about how anyone else should feel about a particular episode, that would be great.