I wonder how much culture affects this. Some cultures may put more pressure to perform your gender than others.
Though I don't recall much external pressure to perform my gender, I was definitely aware of it. We had gendered bicycles in the NL (the frame was different) and I definitely would be embarrassed to ride a girl bicycle. But teens are easily embarrassed in general.
I always held people are human beings first. I only learned about the flaws of gender blindness later.