While I don't disagree with anything you said here, the second and third ones are a lot harder that it actually seems. Let me lay out a scenario for you that I have found myself in multiple times. So I'm in a group conversation. Someone is talking and I have something of my own to say about the topic. I patiently wait my turn. Before I can say something, someone else starts talking. Then the conversation goes in a totally different direction with multiple other people jumping in. By the time it is done, I either never say what I wanted to say, or I say it and they look at me like I am an idiot because that topic was fifteen minutes ago and they aren't even able to remember talking about it. It's frustrating.
That's definitely one of the possibilities and when that happens I blame the person facilitating the meeting. Everyone should have their turn and it's up to the facilitator to ensure it. If everyone (in a group meeting) spoke up at the same time everyone would be talking at once and that's not going to lead to a good outcome.
It happens like that of course, but should not. The facilitator needs to control the evv and flow if the meeting, cover off on each element of discussion and allow each to talk if/when appropriate; it's not always easy to do this, but it's essential in large meetings with many attendees. Free for all meetings are rarely productive.
I get why you'd be frustrated, I would be too.
To be fair, a lot of the interactions that go that way are with my inlaws. It's more of a no holds barred thing!
Haha, like the MMA octagon; I get it. 😁