Obviously, Amir sees that. He knows what's going on. Why doesn't he put an end to that? My best guess is that because Amir is an experienced Microsoft executive, who knows how to use others to take down those who could damage his standing.
Amir needs these loud regulars, so that they could take down those inconvenient members who are asking "wrong" questions and are bringing in "wrong" information.
Amir employs other stratagems of corporate politics as well: badmouthing other prominent audio gear reviewers behind their backs is one of those. I guess it must have worked well for him during his previous career.
I have similar impressions also. As I've worked in bureaucracy, I'm somewhat familiar the stratagems of the managerialist (now they are my clients rather than my superiors or colleagues, which is an easier relationship).
ASR is clearly Amir's retirement hobby. Much is made of expertise and non-commercial status, but he is a self-taught user of his measuring tools and receives material consideration from a number of manufacturers of devices he reviews, so neither claim is entirely solid.