I don't think anyone dislikes Leivo. Its more directed to the fan base that believes he is a shoe in for 60 points a year because he had 2 goals and 8 assists in 13 games last year.
Fact is, Leivo is an average skater at best, who has decent hands and may be able to produce a decent amount of points in the right situation. Essentially he is a poor mans JVR, who most people dislike for his lack of defensive effort. In my opinion, I would rather have Kapanen and/or Soshnikov fill any internal spots, as they are more diverse than Leivo.
the way I'm reading this thread it's the opposite - the optimist camp (where I am) is happy that he's getting a shot and think he could turn out as a viable JVR replacement. The pessimist camp is making absolute statements about what he is (one guy's post devolving into incoherent babble, another guy swearing at people)
that 13 game sample was impressive when you look at the underlying numbers, I don't think that any of us believe that Leivo is going to be a Hart candidate. If he can come close to being that player over a larger sample, and with JVR-like offensive zone/weaker competition usage, he could be a nice inexpensive replacement and possibly an overall small upgrade with the possession abilities
it could also turn out that what he's done in the NHL before this year was a total false positive, and he's a bubble NHL'er, and I think the optimist side of this has acknowledged that
I think there's room for more than Kapanen/Sosh, and that Leivo and Sosh really aren't competing for the same spots - Sosh hasn't shown the offensive ability to be a PP/scoring line option to this point but he has the wheels and tenacity to be a good energy player, Leivo's the opposite of that