I think they reviewed it a bit low. i think deserves at least an 8. Would be a 9 if they included all of the Kuro arc. So could finish and have that whole story nice.
But what do you expect though when you click on the anime section in IGN, and like 70% of the articles or anything related to anime is all about Naruto.
But I mean the VA did a great job with teh first voyage, it had many bosses. Alvida, Morgan, Buggy, and Kuro. And like you just said, covered quite a bit, when they contradict that saying it didn't move at all.
How much story do they expect, when you are introducing 4 main characters. Let alone each of the villians and crews. Plus give each story some emotion.