Brent Peters, ACMG guide & owner of Peak Strategem demonstrates using the clove hitch for faster and easier to manage rock climbing anchors. This is a demonstration and should not be considered instruction or advice. Rock climbing is dangerous and at your own risk. If you do not have the skills to assess when to use this anchor then seek qualified instruction.
While we personally use this anchor there are situations in which it should not be your first choice. The greatest risk is the combination of a poorly dressed hitch, a factor 2 leader fall and poor quality rock that is likely to impact the anchor and possibly cut the sling. Of course, we also recommend that you simply avoid routes that have these risks and to get in the practice of always properly dressing your knots and hitches. If you are climbing where there is risk of rock fall as is the chance of a factor 2 leader fall onto the anchor then you should have the experience and skills on how to best mitigate the risks.
There's been much discussion of this anchor both in the comments and in other videos and we urge you to consider their input as part of your decision on what anchor type is most appropriate for your skill, locations and risk tolerance.