Interesting. Can you describe what your (previous) team worked on? Was it an engineering team? I have experienced many good engineering teams who discuss calmly and with little friction, but when the big business stakeholders (and egos) come in, it's a different story.
It was an engineering team but we had a mix on the room of engineering, PMs, and senior leadership.
It was a very stressful project, we only had a tiny % of the resources we needed, and everyone had their belief as to the best way to navigate the maelstrom and come out the other side.
We were also all very invested in the product space (fitness) but in different aspects of it (e.g. running vs weight training) and we had no budget for market research. So for a long time (until BJ Fogg came along!) feature planning was "who is arguing the loudest for their point of view".
Then again this was classic Microsoft for the longest time, after all this is the company that had weekly "war room" meetings.