And also it's not like many (if any) of the people he cherry-picked from here have the pretensions or attendant responsibilities of being professional music journalists. If he is citing anonymous quotes from internet message boards, that's not exactly the level of professionalism you expect from someone like him.
Speaking from my own perspective here, but perhaps on behalf of others who are pointing out this weakness in Reynold's writing, it's not that I'm trying to be over-protective of a genre of music I'm personally invested in somehow, or that I'm trying to out-cred him in my experience or knowledge of the subject, it's actually that I respect his opinion on things generally and think that occasionally he might have something interesting to say on the subject if he bothered to say it.
I'm willing to accept that he treats his blog as an outlet for personal conjecture and musings and that it shouldn't be taken seriously for that reason. That's the nature of internet self-publishing, so whatever. However, that didn't stop him from his article in the Guardian on the pretty much empirically false relationship between "wonky" music and ketamine. If you want to say that kind of thing is acceptable, then obviously the integrity or relevance of music journalism isn't much of an issue for you.