His reasoning seemed clear to me.
The game's free on PC which was an instant negative for the Wii version.
He found the controls difficult to use - something that I've seen brought up on here many times.
He didn't feel the tutorials taught him enough, and after doing them he still didn't understand how to play correctly - also a problem that's been brought up here for both Wii & PC.
He found the game boring, which when put in the context of his experience makes sense. If you're playing a game, you don't like the controls & even after doing the tutorials you don't understand it's normal to lose interest.
Also keep in mind this is a reviewer, they don't get paid to spend time with the games - they get paid to review a quota. It just happens Toribash is something that requires time most reviewers don't have.
IMO the dude didn't do anything wrong, he put forward his experience & opinion on it. Obviously he didn't think it was utter shite since it at least got a 4/10
People here often forget Toribash is a niche game, and a lot of people never master it. Hell most don't even last more than a couple of weeks before giving up.