Golly gee keeping volks at range is quite the good idea, and one that you can accomplish pretty well on any map that isn't urban with a lot of sight blockers and sharp corners. Still, you should not be able to rush your half track into the middle of 4-5 squads and win just because you take advantage of the games poor hitbox management.
The last patch made it so it can't crush, and the one before that nerfed it's acceleration and armor. Before that it got an HP nerf.
You have to show me a replay where a scout car can push 4-5 squads and survive. Pushing 1-2 squads I am fine with it because it requires micro and risk for "unexpected elements" such as fast Puma or other squads coming from distance, not to mention limiting micro for capping.
The underlying point is, OKW player has it easy with a free truck pushing with kubel and sturm combo to outright win through clutch play.