She wasn't "asked" if she was technical. The person assumed she wasn't based on her appearance and behaved accordingly. Why twist the narrative to make a point unrelated to the story?
I'm not sure what you're talking about. The "Are you actually technical" quote is not part of her anecdote, its in the list of things "men have said straight to my face at tech events" and it is quoted directly as "Are you actually technical". There is not context or narrative that can be twisted.
Because the assumption that women at technical events are not technical is one of the things preventing women from joining the field. It's also extremely condescending, and being condescending is rude and unpleasant. So please don't do that.