I watched the video but I don't agree with his assumptions. His main points are his exclusivity rule, which he uses as way to shrug off counter arguments, and Dyson Spheres. Dyson Spheres are probably a horrible idea in practice, but assuming an alien race didn't skip ahead to free energy or whatever, there is still the time it takes for light to reach us so maybe they could be out there now but the light hasn't reached us yet. If the galaxy could be colonized, than its either they aren't advanced enough, don't want to, or already did. We very well could be under colonization without even knowing it. It was interesting though to see him bring up how long it took for single cell organisms to evolve, so maybe there is something to that. What I didn't like the most about his video is when he said anything too alien for his comprehension was science fiction. He's never even been outside of Earth yet is so certain that our laws of science are universal, when they could be laws only under our local conditions. New scientific discoveries are still being made that change the way science is thought of. If aliens can travel faster than light, then they would have no need for using light-speed communications. His biggest problem is having that mentality that school systems push on children, that scientists are all-knowing and therefore no need to think outside the box as it goes against the established dogma. The article is roughly the same as the video so I don't have anything more on that.