The only thing that I can see in that video that might be controversial is that it doesn’t make clear that counterbalancing is necessary only at slow speeds when the maneuvers performed between the cones are at slow speeds where there’s not enough centrifugal force to balance the motorcycle.
The takeaway for some viewers will be that it’s perfectly all right to ride dirtbike style on the street by pushing the bike down and away from you when you’re cornering. Pushing the bike down and away from you when cornering at medium to high speeds is on the street is counterproductive to safety and the ability for the tires to maintain traction at their limit. We want to be able to keep a few degrees of lean angle in reserve for the surprises that linger around blind corners like other vehicles, dogs, pedestrians, debris, sand or fluid in the roadway. At times it might be necessary to tighten up the radius of the turn in order to cut inside of one of those surprises and if you have the motorcycle pushed down and away from you in the middle of that corner you have less ability to cope with tightening the arc of turn. There is absolutely no need to lean off the motorcycle like Marc Marquez, as used in the example, when riding quick or even fast on the street. Just keeping your body upright in the saddle with the inside shoulder and arm dropped low into the corner keeps you above the bike and you are not compromising sight lines and you can still use your mirrors while still saving a few degrees of lean angle. He made it look as if you’re hanging off the bike with your head down around the mirror. He also mentions that police motors are required to be pushed beyond the limits of front or rear traction at times between the cones but this is not the case on the street running 30, 40, 50 or more miles per hour. When riding above the slow speeds of range maneuvers there’s plenty of centrifugal force to balance the motorcycle in the turns.