The war against ego is misplaced, and if we're not careful, it could turn dystopian.
We are all human, and we all have an ego; you cannot destroy your ego, and if you did, you would not be human. Without the instinct of self-importance, we would eventually meet an untimely death.
Ego should by no means be the main driver of the average decision you make in your everyday life, but when it comes to serving yourself in achieving long-term goals, and serving the world to make it a better place, it is absolutely vital.
We should not be aiming for ego death, but the channeling of our ego in maintaining low time preference to achieve discipline and laser-eye focus. Ego is what gets you out of bed in the morning, and it is what gives you a reason to live. It is why you worship your children and love your family more than everyone else. Ego is why you can forgive yourself despite all your mistakes and love yourself despite all your imperfections.
Where would we be without the ego of Albert Einstein, Alan Turing, and Satoshi Nakamoto, to name the first that come to mind, all who dared to believe that they alone could change the world with their unique perspectives? Guard your ego with all your might, and don't expose it for all to see, for nobody else can understand it as you do, and nobody else can understand the depths of your self-assigned purpose.