It's been like this for a very long time. So let's break down the reasons.
  1. If they tried to argue with everyone here, they would spend all day trying to make all the negative nancies here see reason and have a constructive debate. Debates recently have felt more constructive, but in the past they have not been remotely constructive criticisms.
  2. They probably don't want to suppress honest opinions or anything. Moderators often end up over-moderating and the truth is most things don't need moderating. Just the rare, really extreme stuff, like the one that was deleted a few days ago.
  3. The industry moved away from forums to social media such as twitter, facebook and instagram and that is obviously where the community team puts more of their focus.
  4. The developers are Japanese, so most of the developers that would check here for feedback are probably reading the Japanese forums, not the English forums.
  5. I have seen GMs moderate so maybe they check when someone reports it as a ticket in the game.