I could definitely see the use, but it's truly a video for guys just starting out. I think most of the AudioFanzine members have enough experience to at least know the basics about compression
With that said, this certainly can be helpful for someone just starting out who has no idea what compression is
Harmoniuos Funk, thanks for posting the video. It does a good job of visualizing the concept of compression, and may be quite useful for some people. But you're right about the guy talking being annoying.