Well leaving aside the offensive tone and all that, your choice of words to describe the behaviour of that "Random person" in that specific social context is actually plain wrong.
I am on the spectrum, I have Asperger's, and I can confirm that an autistic person would avoid that kind of interaction like the plague. I have never, ever approached anyone first and never ever been able to hold on a conversation outside of my interests. Small talk is not, in my personal experience, a very common autistic trait at all.