For what it's worth, I did read your post twice before I replied, just to see if I didn't get it on the first pass. What I took from it, and maybe I'm thick as molasses, was that humans defacto love to argue due to biological imperative, we stratify social value based on the success of arguments, and ultimately promote argument as a contact sport that you can dominate in for personal gain and personal validation. Dominate instead of mediate, which I've found through life experience to come most often from people who are deeply insecure with themselves.
When I came back to the thread, I noticed that the submission title had been updated to Most arguments are about ego, not ideas and saw your replies to my post + siblings, and felt like that new title encapsulated your responses perfectly. You and I simply disagree on the purpose and value of argument.
Persuasive people rarely argue. Persuasive people do not need to be unequivocally right. The most persuasive people do get what they want in the end, but you often don't even realize you've been persuaded.
Argumentative people leverage power if they have it, and data, and sometimes "win", but rarely succeed in persuasion.
And that's just my opinion! Feel free to disagree, I've no interest in an argument LOL