Well, the conversation is mostly about the impact of new technology on large-scale trends. When someone makes a prediction about how "a lot of people" will react to new technology, it's understandable that a reply of "I won't react like that" could be seen as irrelevant.
Like if someone says "a lot of people will buy the new iPhone" and someone replies "I will never own a cellular phone or even a cordless landline phone" I can understand why that could seem irrelevant to the conversation.
In this case, I was replying to a speculation that a lot of people won't want to own self-driving cars by saying I'm one of those people, and why. My response was on-topic and relevant.
Replies to comments such as mine saying "you don't matter" strike me as interesting because they come off as overly defensive, is all.
Like if someone says "a lot of people will buy the new iPhone" and someone replies "I will never own a cellular phone or even a cordless landline phone" I can understand why that could seem irrelevant to the conversation.