>>28704344
Completely wrong even in high speed turns, the human body weighs much less than a motorcycle, therefore, the center of gravity lies within the motorcycle not the human rider. Making turns requires input on the handlebars, most have heard of counter steering but at 'low' speeds the effect of counter steering does not occur so the rider must utilize handlebar steering. Now the point of leaning the body in the turn is more about fine tuning lean angle to adjust course over ground. Think of it like, you use the handlebars to create a general course of direction, while leaning to find tune the exact heading.
Let me take this opportunity to define 'low' speeds now. On a motorcycle there is a speed at which handlebar steering becomes counter steering, this is called the crossover point, this point however is not a black and white moment but more a gradient. I mention this because leaning also has an inverse, counter leaning. During handlebar steering, counter leaning helps at keeping the bike up because at low speeds, there aren't enough gyroscopic and centripetal forces to necessitate leaving into a turn opposed to counter leaning. At the crossover point, this changes, with enough physical forces at play, one needs to lean into the turn instead of out because forces are pushing far outboard rather that inboard.
Anyways, if we examine the center of gravity deeper, we'll see it stays closer to the bike than the human so steering with the handlebars is s requirement more than just leaning. If we were talking about bicycle where the center of gravity lies significantly within the human than the vehicle, that boomer would be right but in motorcycles, this is where the fundamental difference lies.