The soles were McKay stitched on.
With some, your toes will "roll" over the front of the sole leaving no protection for the uppers.
That's what's causing the scuffing. Others may roll out to the side rather than the toe.
Treat the scuffed area with polish and keep an eye on it. If it continues to get worse bring your shoes to a local cobbler and ask them to put extended tips on them. That will extend the sole slightly while preventing the scuffing.