Not sure I can argue that statement, except, is that their intent, since they are named "wheelie bars" for a reason or just a seldom mentioned benefit?
I wonder how much grip they have to reduce side slip with the normal small and hard wheel, but granted they do at times have a lot of weight on them to gain traction, helped by their lever arm mounting.

Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.