This may may me a bit unpopular but what a boring video!! - Ok if your an anorak window cleaner but the customer will just want clean windows. The voice on the video borders on being patronizing.
If you get more custom due to that I would be surprised.
I'm hoping its a wind up - if not it's well sad 
TBH the fact that we are on a window cleaning forum makes all of us window cleaning anoraks.
I find that you have a 3 basic types of customer when it comes to wfp.
1. Don't care how you do it just get the windows clean.
2. Intelligent and understand how it works and are amazed the first time.
3. Just don't get it, can't work it out because when they use the garden hose on the windows it leaves marks.
I find that sometimes the first kind of customer will change to number 2 or 3.
The
voice over is designed for customer type number 3 and will therefore be slightly patronizing to a highly intelligent man like yourself and probably most of the other people that use this forum.
Simon.