I don’t think a presentation mean anything unless proven with evidence. tapping into fiber optic and monitor that much throughput without anyone noticing is impossible. anyone with a primary network knowledge knows that. and even if they somehow manage that, connections are encrypted between servers and between server and client.
1,500 years ago, everybody knew that the Earth was the center of the universe. 500 years ago, everybody knew that the Earth was flat. And 15 minutes ago, you knew that humans were alone on this planet. Imagine what you’ll know tomorrow.