Some of us are not comfortable with out appearance and our work is not customer facing. You do not need to see my face, your needs to form opinions and assumpions about me based on appearances are what are "weird". I like how other types if profile pics convey the content of a persons character and personality better than their face.

Your sentiment only makes sense if you are customer facing and your face will decieve them into making decisions that benefit you. Still weird but that is how the world is and why sales people are attractive or have a likeable face generaly speaking.