It's not a very perceptive review, a few legitimate points aside. I can understand not liking the Pagh Wraith storyline because, while I think some aspects of it work very well, it doesn't come together smoothly in the end.
Beyond that, mostly when he thinks he is pointing out flaws in the writers' choices he is revealing that he either hasn't been paying enough attention or hasn't given it enough thought. DS9 gets pretty complicated and often fairly cerebral towards the end, and there are indeed some problems that arise from the writers trying to keep a lot of balls in the air at once, so it is understandable.
Beyond that, mostly when he thinks he is pointing out flaws in the writers' choices he is revealing that he either hasn't been paying enough attention or hasn't given it enough thought. DS9 gets pretty complicated and often fairly cerebral towards the end, and there are indeed some problems that arise from the writers trying to keep a lot of balls in the air at once, so it is understandable.