I Have Learned A Lot, But There Is Much More To Learn

This is more of a rant then anything else. So I was talking to his older guy on here and he was rather concerned by my vocabulary and knowledge compared to what is considered normal for my age. I get really offended when people
Assume that first of all
I am a guy and that I am much older, why you may ask? Well
Simple, because it makes it seem like first of all girls can’t have a large vocabulary and be very smart, and second that someone of my age is not able to know how to spell properly. Like seriously, who the hell do You think you are telling me that I can’t be smart and well read or how ever it’s used.