Perhaps I am being too sensitive, I am trying to introspect. What's clear to me is that when we call people nerds, dorks, weirdos, geeks, etc. it has an undertone of condescence. May be it triggered me because I was called a nerd in highschool and throughout college, almost always in a derogatory manner. What's wrong with being nerdy and interested in technology and science and math I said to myself and ignored others as much as possible.
I can understand this very well because the same happened with me. It's important for us to learn to not care about what others think of us, to see these actions by others as more of a challenge than an insult, and to completely own what we do. People like to play games where they test each others confidence, and unfortunately, perceived weakness is often met with ridicule, rather than empathy.