No. The dissent has been aired. The points have been discussed. Over and over and over. There's no echo chamber. The problem is that some people don't want to

No. The dissent has been aired. The points have been discussed. Over and over and over. There's no echo chamber. The problem is that some people don't want to accept the consensus view that emerges from the social practice of science. They want to keep asking the same questions, ignoring rebuttals, demanding answers, assigning blame. You don't have to accept the consensus view. But you do have to accept that the consensus view, and you being ignored by those that do accept it, doesn't happen in 10 minutes. There was no echo chamber, dissent was tackled, and now those particular dissents are handled with disrespect, maybe. That's life, or least that's the social practice of science. And guess what, every once in a while, the minority report is correct!