No.
Only because you want Volks to be these uber soldiers with Vet5, doesn't meant Relic intended them to be. According to their OKW design philosophy you are support your mediocre basic infantry with other units like elites or vehicles. The same way Soviets do.
Did I say they should be uber at vet 5? I said their Vet 5 should be at least 1.66 (or 1.25 according to relic) times as good as other main inf.
And do you have a source on what OKWs design philosophy actually is? Because according to the original release media: "Brief Description: Volksgrenadiers are reformed from hardened veterans, recovering wounded and new recruits. They are potent frontline infantry for the OberKommando."
Where do you read mediocre?
Furthermore if OKW was meant to get their elite Inf like SU, they should be getting their Obersoldaten at 5 minutes (like Guards and Jesus troops) instead of 200 fuel into the game, where they get gibbed by tanks and rocket artillery.