My already worn Sidi Crossfire 2 SRS with supermoto soles are in way better conditions after 30 hours of motocross with the Varg and the soles can be replaced anyways.
BTW i'm a slow rider and surely not an instructor but those boots look worn too much in the center; maybe if you start riding more on your forefoot you will both extend the life of the boots and ride better, unless you have the rear brake pedal; then it's understandable that you ride on the midfoot IMO.