Yes, people in this forum have already known Bitcoin since 13 years ago. But there are too many people out there, never heard about Bitcoin. So, they can assume Bitcoin is a new technology even if Bitcoin has already existed for more than 13 years. I don't want to debate which one is true, OP or you. In my opinion, new or old technology cannot be determined by years. It can be subjective, depending on the individual who knows it.