seems like most of the participiants of this discussions are flying aircraft where you can afford to fly with just one hand - they can discuss what to do with the other.
Aviation has been invented in the times where you needed both hands to fly, and that is during take off and landing rotation. Obviously in modern Boeings that isn't the case anymore (I'm not flying them). But it seems that it is continued as a myth - so at least you still are doing the right thing.
Dani