Honestly, from what I've played of FFXIII so far, I like it (However, this is probably because I like both interactive storytelling games AND JRPG's). However, he does bring up good points about some things.
All of the characters are completely unlikeable and annoying and I want to slap them all in the face. The redeeming quality about other FF's were that for every Squall/Garnet and Tidus/Yuna, there were characters like Quistis/Irvine and Lulu/Auron/Rikku. The characterization categories that these characters fit into are taken to such EXTREMES that it's laughably ridiculous. Let me take each character into perspective:
Hope: Hope has officially dethroned Squall as the "KING OF ALL EMOS" and it's really infuriating because the emo characters are always the ones that I hate the most.
Vanille: I've always loved Yuffie and Rikku and similar "comic relief characters" because they add humor and light to the otherwise dark plots, but Vanille is just RETARDED and it's extremely annoying.
Lightning: Auron's stoicism is what made him cool and tough. Lightning's stoicism makes her annoying. Why is that? Because Auron has a personality and a background that people can relate to and empathize with. Lightning is literally a brick wall that has legs and carries a sword.
Sazh: Besides having the most ridiculous name imo of any character in the FF series, his character is also blown out of proportion. Although I don't think he's as annoying as Barret, but that's not saying much. Easily the most "real" out of all the characters. I say "real" instead of "likable" because I still find him annoying.
Snow: See the Hope section and replace Hope with Snow and Squall with Zell and it gets my point across pretty well. The "manly" characters are my second most hated categorization of characters.
I can't say anything about Fang because I haven't acquired her yet. Sorry for the extremely long post, but I felt like I had to say this and even though I know most of the people who are viewing this thread are here to make fun of EVERY aspect of this game, I just wanted to get my two cents in.
EDIT: I just remembered something. Move "emo kids" to 2nd place and "manly men" to third. A GREAT thing about this game is that there's no "girly girls" who play the damsel in distress (see Garnet, Rinoa, Yuna) who OFFICIALLY take my number one "most hated" award.