This guy is falsely evangelizing. Don't believe this BS.

1) It's idiotic to say always choose 720p. You should always choose the format that's appropriate for your final delivery. If you're shooting/editing a project that will be broadcast on an interlaced display then that's what you should use. "Better quality" does not mean it's the right choice.

2) He had totally misguided everybody on frame rates. 60 fields per second (half-frames) was chosen over 30 full frames per second for broadcast television over 50 years ago for very good reasons. He says the human eye can't see the missing horizontal scan lines in interlaced scanning. True, you can't see the unlit lines. It only makes the screen darker than it would have been if all the lines were illuminated at the same time. But he falsely translates that to insinuate that the human eye can't see the changing fields being displayed. The human eye can absolutely see all 60 fields per second. The "blurry" stuff he shows as an example with the frozen soccer ball is exactly the same stuff that is essential to the soccer ball looking good when viewed at full speed. If it were 30p (30 full frames per second, non-interlaced) then motion would be extremely choppy. True that this looks bad when in freeze-frame but this is why it looks better when viewed at real speed. Ignoring that fact is incredibly ignorant and misleading.

3) He said progressive is what you see in the movie theater? No it's not. You're watching a film. It isn't at all the display of electronic scan lines. By the way, film is 24 (full) frames per second. Ever notice how a camera shot panning side to side at the right speed looks incredibly choppy and makes you dizzy. That's because 24 frames per second isn't anywhere close to fast enough, which again is why NTSC television standard wer 60 fields per second and not 30 frames per second.

So while this guy is explaining that there is more data transmitted in a 720p video than in a 1080i video, this absolutely does not mean 720p is better for anything other than if you were going to take still frames from the video.