Why are you acting as if having the option to get a bazooka on a rifleman is a downside.
That's not what he's saying. He's saying have to choose between MGs and AT-guns, unlike OKW who get both of those no matter what.
Plus sure volks are like riflemen, apart from the fact they do less damage, and have worse vet.
They are also cheaper to buy, reinforce, and upgrade, while being easier to Vet. Volks get RA bonus at vet 1, their vet is hardly much worse than riflemen if not just as good.
Volks are far more cost effecient than riflemen, and clearly need to be nerfed.