I completely disagree with your video. A leaky glide/wand interface is bad. The glide in the video is worn. The profile of the glide has been flattened causing lockdown. It either needs to be reshaped or replaced.
Well than I guess I'll recall every GreenGide ever sold.
Why don't you go prove it to yourself
take a shop vac hose and put it over a coin on a table and turn the machine on and off ..when you lift the hose the coin will still be sitting there
now drill a small hole into the end of the hose or just crack it a little bit and turn the vacuum off and on and you'll find the coin in your waste tank thus proving my point
Green or any glide will have a loose fit on some welded wands..... if its falling off then silicone it to the head but DO NOT seal the edges unless you run a portable of a slow spinning 3 series blower