In this passage, the author is claiming that with transhumanism and the growing appeal of technology as tools to advance or "extend" the human body, it can blur the lines between what is considered human and what is considered technology. For example, the author previously mentions social media and cell phone use in today's world. In today's society, using smartphones has become second nature. The author is implying that in the near future tools and technology such as anabolic steroids, laser surgery, advanced prosthetic limbs, etc can also become as prominent to humans as cellphones/social media is now.