What the author says about ego goes both ways. People often reject arguments because of ego. Arguments can imply that they way someone has been doing something is suboptimal or even flat out wrong, or at least that's how they may be perceived. Even if something you're arguing for can improve the situation, the other parties may refuse to give it a chance because they need to protect their egos.

At some point, people have to introduce ideas into a broader consciousness, even if they clash with other ideas. How else will anything actually get done? Putting forth an argument doesn't necessarily have to come from the ego. Even if one does come from the ego, that doesn't mean the idea itself is bad.

I've mostly stopped trying to argue or debate on any topic because the probability of being chronically misunderstood usually outweighs any benefit that would come from successfully persuading the other person. I'm never convinced that I'm 100% right on anything, and life is too short to spend it arguing with those who do; which describes a lot of people.

The other reason I rarely argue anymore is that, if I am correct on something, reality usually proves that I was. That doesn't mean everyone else is gonna say "Ravenstine was actually right", because they never do, but at least I get the satisfaction of having been able to trust myself.