The article lost me at "a game that was hamstrung by the creator’s desire to spite a portion of his fans." From there, I couldn't remotely relate to this guy.
There is some kind of resentment of Sakurai, and it isn't completely misplaced, though I agree that to call it spite is a big shift in blame. Lack of openness maybe, but spite is a strong way to say it, even most probably wrong.
But there is a basis in reality there, metaknight is overpowered, and it's know that that's Sakurai's pet character.