If you tell someone they are nothing, worse than calling them names

And if you meet some people on the streets who are not into spirituality or Advaita, and if you say, who are you? You are nothing. It is the biggest insight you see, worse than calling them names is to say that you are nothing. Because the ego has made all this investment into making something out of you. Everyone wants to become something. So this acceptance that in this phenomenal world, I am nothing. As best I am just the witness of all of this. I cannot do anything, I cannot become something. So it can seem humbling like you said. But from this humility, the true understanding of what you are, you will realize that you are the supreme one. But not as a person. See, every person wants to become the supreme one.