This article is more nuanced then just being against wearing headphones, but I do think it's important not to judge folks wearing headphones either on the street or in the office since it is a helpful way to block out distractions and signal to others that you're busy with your own thing.

As a dev I'd often pop on headphone when working in the office even without music when I was working on a serious chunk of logic - I'm on the senior end of things and get lots of questions and sometimes you really get into a groove and want to focus.