I watched the video. Obviously this lightweight anchor is meant for runabouts and dinghies, as shown, where lightweight is an advantage.
In case someone is wondering whether it would be suitable for anchoring a larger boat, here are some notes on anchoring.
I have anchored my 10,000 lb sailboat many years in many places with a variety of anchors. I also understand the dynamics of anchoring, and the qualities of sand. I have tested the way the CQR anchor provides its holding power. This is what I know:
The holding power of a burying type anchor is the same as the pull you apply to the rode when you try and bed it in. If you hand pull the anchor, as is shown in the video, then you will not get a holding strength more than you can pull with your body, say a 100 lbs. In the video a truck is needed to develop a pull of 3000 Newtons or 670 lbs, even here you see the anchor dragging. This level of pull power is not possible on a small sailboat - the best you can hope for is to bury one fluke of a 25 lb CQR using the engine.
Burying anchors are designed to dig deeper as the pull on the rode increases, as it would in a storm. They dig down into the sand (not mud which requires a different anchor design,) until the weight of the sand above the flukes is more than the vertical forces on the anchor which are trying to lift the sand. Sand is a plastic solid and each grain of sand pushes on other grains, so that billions of grains move when there is a disturbance in only a small area, like that of a fluke of an anchor.
In a gale a fluke might bury down only one foot, and in a storm both flukes would be pulled under the sand perhaps two feet, with the shank just at the surface.
I measured 600 lb pull needed (in a beach test) to achieve this depth of burial . The most pull I measured was during a hurricane in Bermuda where the wind speeds at my location were recorded as 58Kts ( at 200 feet,) but I only measured 38 kts at deck level, 4 feet above the waves (wind speed is officially quoted at a standardized height of 10M -33 feet) Wind speed reduces when the measurement is made closer to the sea. At sea level a small bird can rest in a gale.
I measured the pull on the rode with a spring balance. It was less than 300 lbs. At this level of pull, I suspected that only one fluke was buried and holding the boat (though I had three anchors down, there was little load on the leeward anchors.)
A 35 lb CQR anchor has a holding power in sand of more than a thousand pounds, if it is fully buried.
There is not much benefit from the gliding motion of this anchor if you can't see where it lands because of murky water, or it sails too far away. When anchoring it is very important to see that the anchor buries in sand and not coral or growth, so it is best to hover over the anchor location until you see what it is made of, then drop the anchor onto that spot, and then drive away with a 10:1 rode ratio, and then pull to bury it.