The image shows a cable with an RJ45 Ethernet plug.
Ultrax: Humanity started recovering. Governments were reinstated, communication technology re-evolved, at a fast pace thanks to available working exemplars. Eventually, the Internet got resurrected from its ashes. This is when the fun could really begin for me…

Zhang: I don't think I like your idea of “fun…”
Ultrax: Haha, that is because you are boring! Just as it was boring to see mankind becoming smarter again. My goal was to halt and even reverse that. Rapidly evolving communications technology made this easier.
Zhang: How?

We see a person shrugging while another is foolishly looking at a smartphone screen.
Ultrax: Consider the group of geniuses who could still truly grasp all aspects of the technology: as it became more complex, that group kept shrinking. The rest just took it all for granted, no longer learning much if anything from it, instead they consumed ever more brain rot.