Strange Herman, you fail to mention you sell the same thing as Gardiners but under your own name! Are the video’s intended to drum up work for you (I never click on them). I doubt Gardiners have done anything wrong regardless of who invented it. Alex isn’t daft. 
I just wish you could put more input into the forum rather than every post being a link to youtube. I’m sure you might have some useful tips for a change instead of piggybacking Gardiners or Wagtails success?
You can think what you want, all you seem to do is whin about things but not much else.
You said yourself you don't even click on them ( the video your own words.)
So if not interest that's OK but if your not watching video at all, might be best to say nothing.
Videos find it is better then writing pages trying to explain things.
Regarding square locks or squeegees anything that has been done in videos is to improve the way they are used.
Only for the benefit of the user.