So, when it's obvious how to kill a boss, it's too easy, but if you have to put in some effort, it's tedious?
I really don't think this is to be taken seriously by us gamers. This is clearly written by/for an audience that is a far-cry from ours. Since i'm European, i don't have the game yet, but i really doubt it's a bad game, and everything the reviewer said was just seeing the Metroid formula negatively, instead of thinking positively about it.
Us:"Yay, freedom!"
Reviewer:"Lack of direction."
Us:"Cool boss battles!"
Reviewer:"Battles where you have to put in effort? Screw this!"
This guy has his head up his ass.